Home / 8,650.27-12,979.50-5,147.20

Finding the Fourth Proportional to 8,650.27, 12,979.50 and 5,147.20

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Solution

The fourth proportional to 8,650.27, 12,979.50 and 5,147.20 is: 7,723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.27 : 12,979.50 = 5,147.20 : x
  2. Step 2: Convert to fraction form
    8,650.27/12,979.50 = 5,147.20/x
  3. Step 3: Cross multiply
    8,650.27x = 12,979.50 × 5,147.20
  4. Step 4: Simplify right side
    8,650.27x = 66,808,049.95
  5. Step 5: Solve for x
    x = 66,808,049.95/8,650.27
  6. Step 6: Final answer
    x = 7,723.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.