Home / 7,862.40-11,790.24-2,665.92

Finding the Fourth Proportional to 7,862.40, 11,790.24 and 2,665.92

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Solution

The fourth proportional to 7,862.40, 11,790.24 and 2,665.92 is: 3,997.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.40 : 11,790.24 = 2,665.92 : x
  2. Step 2: Convert to fraction form
    7,862.40/11,790.24 = 2,665.92/x
  3. Step 3: Cross multiply
    7,862.40x = 11,790.24 × 2,665.92
  4. Step 4: Simplify right side
    7,862.40x = 31,431,836.62
  5. Step 5: Solve for x
    x = 31,431,836.62/7,862.40
  6. Step 6: Final answer
    x = 3,997.74

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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.