Home / 8,986.28-13,481.34-3,143.08

Finding the Fourth Proportional to 8,986.28, 13,481.34 and 3,143.08

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Solution

The fourth proportional to 8,986.28, 13,481.34 and 3,143.08 is: 4,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.28 : 13,481.34 = 3,143.08 : x
  2. Step 2: Convert to fraction form
    8,986.28/13,481.34 = 3,143.08/x
  3. Step 3: Cross multiply
    8,986.28x = 13,481.34 × 3,143.08
  4. Step 4: Simplify right side
    8,986.28x = 42,372,930.13
  5. Step 5: Solve for x
    x = 42,372,930.13/8,986.28
  6. Step 6: Final answer
    x = 4,715.29

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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.