Home / 9,132.28-12,580.68-8,687.58

Finding the Fourth Proportional to 9,132.28, 12,580.68 and 8,687.58

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Solution

The fourth proportional to 9,132.28, 12,580.68 and 8,687.58 is: 11,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,132.28 : 12,580.68 = 8,687.58 : x
  2. Step 2: Convert to fraction form
    9,132.28/12,580.68 = 8,687.58/x
  3. Step 3: Cross multiply
    9,132.28x = 12,580.68 × 8,687.58
  4. Step 4: Simplify right side
    9,132.28x = 109,295,663.95
  5. Step 5: Solve for x
    x = 109,295,663.95/9,132.28
  6. Step 6: Final answer
    x = 11,968.06

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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.