Home / 7,990.24-11,974.24-4,086.40

Finding the Fourth Proportional to 7,990.24, 11,974.24 and 4,086.40

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Solution

The fourth proportional to 7,990.24, 11,974.24 and 4,086.40 is: 6,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.24 : 11,974.24 = 4,086.40 : x
  2. Step 2: Convert to fraction form
    7,990.24/11,974.24 = 4,086.40/x
  3. Step 3: Cross multiply
    7,990.24x = 11,974.24 × 4,086.40
  4. Step 4: Simplify right side
    7,990.24x = 48,931,534.34
  5. Step 5: Solve for x
    x = 48,931,534.34/7,990.24
  6. Step 6: Final answer
    x = 6,123.91

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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.