Home / 5,691.80-8,540.28-2,570.12

Finding the Fourth Proportional to 5,691.80, 8,540.28 and 2,570.12

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Solution

The fourth proportional to 5,691.80, 8,540.28 and 2,570.12 is: 3,856.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.80 : 8,540.28 = 2,570.12 : x
  2. Step 2: Convert to fraction form
    5,691.80/8,540.28 = 2,570.12/x
  3. Step 3: Cross multiply
    5,691.80x = 8,540.28 × 2,570.12
  4. Step 4: Simplify right side
    5,691.80x = 21,949,544.43
  5. Step 5: Solve for x
    x = 21,949,544.43/5,691.80
  6. Step 6: Final answer
    x = 3,856.34

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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.