Home / 8,660.40-11,948.15-5,677.88

Finding the Fourth Proportional to 8,660.40, 11,948.15 and 5,677.88

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Solution

The fourth proportional to 8,660.40, 11,948.15 and 5,677.88 is: 7,833.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.40 : 11,948.15 = 5,677.88 : x
  2. Step 2: Convert to fraction form
    8,660.40/11,948.15 = 5,677.88/x
  3. Step 3: Cross multiply
    8,660.40x = 11,948.15 × 5,677.88
  4. Step 4: Simplify right side
    8,660.40x = 67,840,073.79
  5. Step 5: Solve for x
    x = 67,840,073.79/8,660.40
  6. Step 6: Final answer
    x = 7,833.36

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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.