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Finding the Fourth Proportional to 1,502.38, 2,073.09 and 979.12

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Solution

The fourth proportional to 1,502.38, 2,073.09 and 979.12 is: 1,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.38 : 2,073.09 = 979.12 : x
  2. Step 2: Convert to fraction form
    1,502.38/2,073.09 = 979.12/x
  3. Step 3: Cross multiply
    1,502.38x = 2,073.09 × 979.12
  4. Step 4: Simplify right side
    1,502.38x = 2,029,803.88
  5. Step 5: Solve for x
    x = 2,029,803.88/1,502.38
  6. Step 6: Final answer
    x = 1,351.06

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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.