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Finding the Fourth Proportional to 8,943.80, 12,342.76 and 5,404.96

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Solution

The fourth proportional to 8,943.80, 12,342.76 and 5,404.96 is: 7,459.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.80 : 12,342.76 = 5,404.96 : x
  2. Step 2: Convert to fraction form
    8,943.80/12,342.76 = 5,404.96/x
  3. Step 3: Cross multiply
    8,943.80x = 12,342.76 × 5,404.96
  4. Step 4: Simplify right side
    8,943.80x = 66,712,124.09
  5. Step 5: Solve for x
    x = 66,712,124.09/8,943.80
  6. Step 6: Final answer
    x = 7,459.04

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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.