Home / 7,854.60-11,781.09-2,660.34

Finding the Fourth Proportional to 7,854.60, 11,781.09 and 2,660.34

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Solution

The fourth proportional to 7,854.60, 11,781.09 and 2,660.34 is: 3,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.60 : 11,781.09 = 2,660.34 : x
  2. Step 2: Convert to fraction form
    7,854.60/11,781.09 = 2,660.34/x
  3. Step 3: Cross multiply
    7,854.60x = 11,781.09 × 2,660.34
  4. Step 4: Simplify right side
    7,854.60x = 31,341,704.97
  5. Step 5: Solve for x
    x = 31,341,704.97/7,854.60
  6. Step 6: Final answer
    x = 3,990.24

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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.