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Finding the Fourth Proportional to 6,691.40, 9,233.32 and 3,706.80

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Solution

The fourth proportional to 6,691.40, 9,233.32 and 3,706.80 is: 5,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.40 : 9,233.32 = 3,706.80 : x
  2. Step 2: Convert to fraction form
    6,691.40/9,233.32 = 3,706.80/x
  3. Step 3: Cross multiply
    6,691.40x = 9,233.32 × 3,706.80
  4. Step 4: Simplify right side
    6,691.40x = 34,226,070.58
  5. Step 5: Solve for x
    x = 34,226,070.58/6,691.40
  6. Step 6: Final answer
    x = 5,114.93

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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.