Home / 8,605.28-12,909.82-3,411.02

Finding the Fourth Proportional to 8,605.28, 12,909.82 and 3,411.02

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Solution

The fourth proportional to 8,605.28, 12,909.82 and 3,411.02 is: 5,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.28 : 12,909.82 = 3,411.02 : x
  2. Step 2: Convert to fraction form
    8,605.28/12,909.82 = 3,411.02/x
  3. Step 3: Cross multiply
    8,605.28x = 12,909.82 × 3,411.02
  4. Step 4: Simplify right side
    8,605.28x = 44,035,654.22
  5. Step 5: Solve for x
    x = 44,035,654.22/8,605.28
  6. Step 6: Final answer
    x = 5,117.28

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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.