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Finding the Fourth Proportional to 8,606.76, 12,909.42 and 3,411.24

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Solution

The fourth proportional to 8,606.76, 12,909.42 and 3,411.24 is: 5,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.76 : 12,909.42 = 3,411.24 : x
  2. Step 2: Convert to fraction form
    8,606.76/12,909.42 = 3,411.24/x
  3. Step 3: Cross multiply
    8,606.76x = 12,909.42 × 3,411.24
  4. Step 4: Simplify right side
    8,606.76x = 44,037,129.88
  5. Step 5: Solve for x
    x = 44,037,129.88/8,606.76
  6. Step 6: Final answer
    x = 5,116.57

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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.