Home / 8,117.12-12,159.44-3,728.56

Finding the Fourth Proportional to 8,117.12, 12,159.44 and 3,728.56

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Solution

The fourth proportional to 8,117.12, 12,159.44 and 3,728.56 is: 5,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.12 : 12,159.44 = 3,728.56 : x
  2. Step 2: Convert to fraction form
    8,117.12/12,159.44 = 3,728.56/x
  3. Step 3: Cross multiply
    8,117.12x = 12,159.44 × 3,728.56
  4. Step 4: Simplify right side
    8,117.12x = 45,337,201.61
  5. Step 5: Solve for x
    x = 45,337,201.61/8,117.12
  6. Step 6: Final answer
    x = 5,585.38

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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.