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Finding the Fourth Proportional to 8,908.42, 13,358.12 and 2,983.20

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Solution

The fourth proportional to 8,908.42, 13,358.12 and 2,983.20 is: 4,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.42 : 13,358.12 = 2,983.20 : x
  2. Step 2: Convert to fraction form
    8,908.42/13,358.12 = 2,983.20/x
  3. Step 3: Cross multiply
    8,908.42x = 13,358.12 × 2,983.20
  4. Step 4: Simplify right side
    8,908.42x = 39,849,943.58
  5. Step 5: Solve for x
    x = 39,849,943.58/8,908.42
  6. Step 6: Final answer
    x = 4,473.29

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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.