Home / 9,327.68-12,872.18-5,135.92

Finding the Fourth Proportional to 9,327.68, 12,872.18 and 5,135.92

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Solution

The fourth proportional to 9,327.68, 12,872.18 and 5,135.92 is: 7,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.68 : 12,872.18 = 5,135.92 : x
  2. Step 2: Convert to fraction form
    9,327.68/12,872.18 = 5,135.92/x
  3. Step 3: Cross multiply
    9,327.68x = 12,872.18 × 5,135.92
  4. Step 4: Simplify right side
    9,327.68x = 66,110,486.71
  5. Step 5: Solve for x
    x = 66,110,486.71/9,327.68
  6. Step 6: Final answer
    x = 7,087.56

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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.