Home / 8,139.12-12,207.76-5,523.42

Finding the Fourth Proportional to 8,139.12, 12,207.76 and 5,523.42

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Solution

The fourth proportional to 8,139.12, 12,207.76 and 5,523.42 is: 8,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.12 : 12,207.76 = 5,523.42 : x
  2. Step 2: Convert to fraction form
    8,139.12/12,207.76 = 5,523.42/x
  3. Step 3: Cross multiply
    8,139.12x = 12,207.76 × 5,523.42
  4. Step 4: Simplify right side
    8,139.12x = 67,428,617.71
  5. Step 5: Solve for x
    x = 67,428,617.71/8,139.12
  6. Step 6: Final answer
    x = 8,284.51

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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.