Home / 8,981.29-12,402.02-5,629.88

Finding the Fourth Proportional to 8,981.29, 12,402.02 and 5,629.88

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Solution

The fourth proportional to 8,981.29, 12,402.02 and 5,629.88 is: 7,774.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.29 : 12,402.02 = 5,629.88 : x
  2. Step 2: Convert to fraction form
    8,981.29/12,402.02 = 5,629.88/x
  3. Step 3: Cross multiply
    8,981.29x = 12,402.02 × 5,629.88
  4. Step 4: Simplify right side
    8,981.29x = 69,821,794.20
  5. Step 5: Solve for x
    x = 69,821,794.20/8,981.29
  6. Step 6: Final answer
    x = 7,774.14

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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.