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Finding the Fourth Proportional to 8,242.10, 12,366.03 and 5,479.70

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Solution

The fourth proportional to 8,242.10, 12,366.03 and 5,479.70 is: 8,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,242.10 : 12,366.03 = 5,479.70 : x
  2. Step 2: Convert to fraction form
    8,242.10/12,366.03 = 5,479.70/x
  3. Step 3: Cross multiply
    8,242.10x = 12,366.03 × 5,479.70
  4. Step 4: Simplify right side
    8,242.10x = 67,762,134.59
  5. Step 5: Solve for x
    x = 67,762,134.59/8,242.10
  6. Step 6: Final answer
    x = 8,221.46

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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.