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Finding the Fourth Proportional to 8,079.59, 12,120.29 and 3,695.87

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Solution

The fourth proportional to 8,079.59, 12,120.29 and 3,695.87 is: 5,544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.59 : 12,120.29 = 3,695.87 : x
  2. Step 2: Convert to fraction form
    8,079.59/12,120.29 = 3,695.87/x
  3. Step 3: Cross multiply
    8,079.59x = 12,120.29 × 3,695.87
  4. Step 4: Simplify right side
    8,079.59x = 44,794,937.12
  5. Step 5: Solve for x
    x = 44,794,937.12/8,079.59
  6. Step 6: Final answer
    x = 5,544.21

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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.