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Finding the Fourth Proportional to 3,613.71, 5,420.58 and 2,957.61

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Solution

The fourth proportional to 3,613.71, 5,420.58 and 2,957.61 is: 4,436.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.71 : 5,420.58 = 2,957.61 : x
  2. Step 2: Convert to fraction form
    3,613.71/5,420.58 = 2,957.61/x
  3. Step 3: Cross multiply
    3,613.71x = 5,420.58 × 2,957.61
  4. Step 4: Simplify right side
    3,613.71x = 16,031,961.61
  5. Step 5: Solve for x
    x = 16,031,961.61/3,613.71
  6. Step 6: Final answer
    x = 4,436.43

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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.