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Finding the Fourth Proportional to 4,503.76, 6,215.18 and 2,640.76

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Solution

The fourth proportional to 4,503.76, 6,215.18 and 2,640.76 is: 3,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,503.76 : 6,215.18 = 2,640.76 : x
  2. Step 2: Convert to fraction form
    4,503.76/6,215.18 = 2,640.76/x
  3. Step 3: Cross multiply
    4,503.76x = 6,215.18 × 2,640.76
  4. Step 4: Simplify right side
    4,503.76x = 16,412,798.74
  5. Step 5: Solve for x
    x = 16,412,798.74/4,503.76
  6. Step 6: Final answer
    x = 3,644.24

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Find fourth proportional to 2,251.88, 3,107.59 and 1,320.38
Half scale
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Double scale
Find fourth proportional to 4,504.76, 6,216.56 and 2,641.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.