Home / 8,918.60-13,373.76-3,988.24

Finding the Fourth Proportional to 8,918.60, 13,373.76 and 3,988.24

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Solution

The fourth proportional to 8,918.60, 13,373.76 and 3,988.24 is: 5,980.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.60 : 13,373.76 = 3,988.24 : x
  2. Step 2: Convert to fraction form
    8,918.60/13,373.76 = 3,988.24/x
  3. Step 3: Cross multiply
    8,918.60x = 13,373.76 × 3,988.24
  4. Step 4: Simplify right side
    8,918.60x = 53,337,764.58
  5. Step 5: Solve for x
    x = 53,337,764.58/8,918.60
  6. Step 6: Final answer
    x = 5,980.51

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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.