Home / 8,540.40-12,806.28-2,615.52

Finding the Fourth Proportional to 8,540.40, 12,806.28 and 2,615.52

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Solution

The fourth proportional to 8,540.40, 12,806.28 and 2,615.52 is: 3,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.40 : 12,806.28 = 2,615.52 : x
  2. Step 2: Convert to fraction form
    8,540.40/12,806.28 = 2,615.52/x
  3. Step 3: Cross multiply
    8,540.40x = 12,806.28 × 2,615.52
  4. Step 4: Simplify right side
    8,540.40x = 33,495,081.47
  5. Step 5: Solve for x
    x = 33,495,081.47/8,540.40
  6. Step 6: Final answer
    x = 3,921.96

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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.