Home / 8,871.28-13,309.49-2,631.44

Finding the Fourth Proportional to 8,871.28, 13,309.49 and 2,631.44

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Solution

The fourth proportional to 8,871.28, 13,309.49 and 2,631.44 is: 3,947.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.28 : 13,309.49 = 2,631.44 : x
  2. Step 2: Convert to fraction form
    8,871.28/13,309.49 = 2,631.44/x
  3. Step 3: Cross multiply
    8,871.28x = 13,309.49 × 2,631.44
  4. Step 4: Simplify right side
    8,871.28x = 35,023,111.21
  5. Step 5: Solve for x
    x = 35,023,111.21/8,871.28
  6. Step 6: Final answer
    x = 3,947.92

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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.