Home / 7,932.38-11,890.20-2,662.40

Finding the Fourth Proportional to 7,932.38, 11,890.20 and 2,662.40

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Solution

The fourth proportional to 7,932.38, 11,890.20 and 2,662.40 is: 3,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,932.38 : 11,890.20 = 2,662.40 : x
  2. Step 2: Convert to fraction form
    7,932.38/11,890.20 = 2,662.40/x
  3. Step 3: Cross multiply
    7,932.38x = 11,890.20 × 2,662.40
  4. Step 4: Simplify right side
    7,932.38x = 31,656,409.03
  5. Step 5: Solve for x
    x = 31,656,409.03/7,932.38
  6. Step 6: Final answer
    x = 3,990.78

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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.