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Finding the Fourth Proportional to 6,929.57, 10,388.88 and 3,640.88

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Solution

The fourth proportional to 6,929.57, 10,388.88 and 3,640.88 is: 5,458.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.57 : 10,388.88 = 3,640.88 : x
  2. Step 2: Convert to fraction form
    6,929.57/10,388.88 = 3,640.88/x
  3. Step 3: Cross multiply
    6,929.57x = 10,388.88 × 3,640.88
  4. Step 4: Simplify right side
    6,929.57x = 37,824,691.39
  5. Step 5: Solve for x
    x = 37,824,691.39/6,929.57
  6. Step 6: Final answer
    x = 5,458.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.