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Finding the Fourth Proportional to 3,150.12, 4,347.12 and 1,752.76

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Solution

The fourth proportional to 3,150.12, 4,347.12 and 1,752.76 is: 2,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.12 : 4,347.12 = 1,752.76 : x
  2. Step 2: Convert to fraction form
    3,150.12/4,347.12 = 1,752.76/x
  3. Step 3: Cross multiply
    3,150.12x = 4,347.12 × 1,752.76
  4. Step 4: Simplify right side
    3,150.12x = 7,619,458.05
  5. Step 5: Solve for x
    x = 7,619,458.05/3,150.12
  6. Step 6: Final answer
    x = 2,418.78

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Half scale
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Double scale
Find fourth proportional to 3,151.12, 4,348.50 and 1,753.76
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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.