Home / 8,089.60-12,139.52-5,169.92

Finding the Fourth Proportional to 8,089.60, 12,139.52 and 5,169.92

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Solution

The fourth proportional to 8,089.60, 12,139.52 and 5,169.92 is: 7,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,089.60 : 12,139.52 = 5,169.92 : x
  2. Step 2: Convert to fraction form
    8,089.60/12,139.52 = 5,169.92/x
  3. Step 3: Cross multiply
    8,089.60x = 12,139.52 × 5,169.92
  4. Step 4: Simplify right side
    8,089.60x = 62,760,347.24
  5. Step 5: Solve for x
    x = 62,760,347.24/8,089.60
  6. Step 6: Final answer
    x = 7,758.15

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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.