Home / 9,147.20-12,622.38-5,169.02

Finding the Fourth Proportional to 9,147.20, 12,622.38 and 5,169.02

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Solution

The fourth proportional to 9,147.20, 12,622.38 and 5,169.02 is: 7,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.20 : 12,622.38 = 5,169.02 : x
  2. Step 2: Convert to fraction form
    9,147.20/12,622.38 = 5,169.02/x
  3. Step 3: Cross multiply
    9,147.20x = 12,622.38 × 5,169.02
  4. Step 4: Simplify right side
    9,147.20x = 65,245,334.67
  5. Step 5: Solve for x
    x = 65,245,334.67/9,147.20
  6. Step 6: Final answer
    x = 7,132.82

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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.