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Finding the Fourth Proportional to 6,387.72, 8,815.13 and 3,593.22

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Solution

The fourth proportional to 6,387.72, 8,815.13 and 3,593.22 is: 4,958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.72 : 8,815.13 = 3,593.22 : x
  2. Step 2: Convert to fraction form
    6,387.72/8,815.13 = 3,593.22/x
  3. Step 3: Cross multiply
    6,387.72x = 8,815.13 × 3,593.22
  4. Step 4: Simplify right side
    6,387.72x = 31,674,701.42
  5. Step 5: Solve for x
    x = 31,674,701.42/6,387.72
  6. Step 6: Final answer
    x = 4,958.69

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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.