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Finding the Fourth Proportional to 8,423.54, 12,635.13 and 3,742.28

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Solution

The fourth proportional to 8,423.54, 12,635.13 and 3,742.28 is: 5,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.54 : 12,635.13 = 3,742.28 : x
  2. Step 2: Convert to fraction form
    8,423.54/12,635.13 = 3,742.28/x
  3. Step 3: Cross multiply
    8,423.54x = 12,635.13 × 3,742.28
  4. Step 4: Simplify right side
    8,423.54x = 47,284,131.12
  5. Step 5: Solve for x
    x = 47,284,131.12/8,423.54
  6. Step 6: Final answer
    x = 5,613.34

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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.