Home / 9,327.92-12,872.28-5,136.20

Finding the Fourth Proportional to 9,327.92, 12,872.28 and 5,136.20

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Solution

The fourth proportional to 9,327.92, 12,872.28 and 5,136.20 is: 7,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.92 : 12,872.28 = 5,136.20 : x
  2. Step 2: Convert to fraction form
    9,327.92/12,872.28 = 5,136.20/x
  3. Step 3: Cross multiply
    9,327.92x = 12,872.28 × 5,136.20
  4. Step 4: Simplify right side
    9,327.92x = 66,114,604.54
  5. Step 5: Solve for x
    x = 66,114,604.54/9,327.92
  6. Step 6: Final answer
    x = 7,087.82

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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.