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Finding the Fourth Proportional to 6,387.34, 8,815.38 and 3,593.38

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Solution

The fourth proportional to 6,387.34, 8,815.38 and 3,593.38 is: 4,959.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.34 : 8,815.38 = 3,593.38 : x
  2. Step 2: Convert to fraction form
    6,387.34/8,815.38 = 3,593.38/x
  3. Step 3: Cross multiply
    6,387.34x = 8,815.38 × 3,593.38
  4. Step 4: Simplify right side
    6,387.34x = 31,677,010.18
  5. Step 5: Solve for x
    x = 31,677,010.18/6,387.34
  6. Step 6: Final answer
    x = 4,959.34

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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.