Home / 8,862.60-12,228.18-5,715

Finding the Fourth Proportional to 8,862.60, 12,228.18 and 5,715

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Solution

The fourth proportional to 8,862.60, 12,228.18 and 5,715 is: 7,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.60 : 12,228.18 = 5,715 : x
  2. Step 2: Convert to fraction form
    8,862.60/12,228.18 = 5,715/x
  3. Step 3: Cross multiply
    8,862.60x = 12,228.18 × 5,715
  4. Step 4: Simplify right side
    8,862.60x = 69,884,048.70
  5. Step 5: Solve for x
    x = 69,884,048.70/8,862.60
  6. Step 6: Final answer
    x = 7,885.28

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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.