Home / 9,327.62-12,872.15-5,135.87

Finding the Fourth Proportional to 9,327.62, 12,872.15 and 5,135.87

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Solution

The fourth proportional to 9,327.62, 12,872.15 and 5,135.87 is: 7,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.62 : 12,872.15 = 5,135.87 : x
  2. Step 2: Convert to fraction form
    9,327.62/12,872.15 = 5,135.87/x
  3. Step 3: Cross multiply
    9,327.62x = 12,872.15 × 5,135.87
  4. Step 4: Simplify right side
    9,327.62x = 66,109,598.98
  5. Step 5: Solve for x
    x = 66,109,598.98/9,327.62
  6. Step 6: Final answer
    x = 7,087.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.