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Finding the Fourth Proportional to 6,348.76, 8,761.02 and 3,554.20

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Solution

The fourth proportional to 6,348.76, 8,761.02 and 3,554.20 is: 4,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,348.76 : 8,761.02 = 3,554.20 : x
  2. Step 2: Convert to fraction form
    6,348.76/8,761.02 = 3,554.20/x
  3. Step 3: Cross multiply
    6,348.76x = 8,761.02 × 3,554.20
  4. Step 4: Simplify right side
    6,348.76x = 31,138,417.28
  5. Step 5: Solve for x
    x = 31,138,417.28/6,348.76
  6. Step 6: Final answer
    x = 4,904.65

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Half scale
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Double scale
Find fourth proportional to 6,349.76, 8,762.40 and 3,555.20
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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.