Home / 8,950.92-12,355.60-7,686.90

Finding the Fourth Proportional to 8,950.92, 12,355.60 and 7,686.90

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Solution

The fourth proportional to 8,950.92, 12,355.60 and 7,686.90 is: 10,610.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,950.92 : 12,355.60 = 7,686.90 : x
  2. Step 2: Convert to fraction form
    8,950.92/12,355.60 = 7,686.90/x
  3. Step 3: Cross multiply
    8,950.92x = 12,355.60 × 7,686.90
  4. Step 4: Simplify right side
    8,950.92x = 94,976,242.42
  5. Step 5: Solve for x
    x = 94,976,242.42/8,950.92
  6. Step 6: Final answer
    x = 10,610.78

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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.