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Finding the Fourth Proportional to 6,387.70, 8,814.81 and 3,592.66

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Solution

The fourth proportional to 6,387.70, 8,814.81 and 3,592.66 is: 4,957.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.70 : 8,814.81 = 3,592.66 : x
  2. Step 2: Convert to fraction form
    6,387.70/8,814.81 = 3,592.66/x
  3. Step 3: Cross multiply
    6,387.70x = 8,814.81 × 3,592.66
  4. Step 4: Simplify right side
    6,387.70x = 31,668,615.29
  5. Step 5: Solve for x
    x = 31,668,615.29/6,387.70
  6. Step 6: Final answer
    x = 4,957.75

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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.