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Finding the Fourth Proportional to 8,902.79, 13,358.33 and 3,971.91

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Solution

The fourth proportional to 8,902.79, 13,358.33 and 3,971.91 is: 5,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.79 : 13,358.33 = 3,971.91 : x
  2. Step 2: Convert to fraction form
    8,902.79/13,358.33 = 3,971.91/x
  3. Step 3: Cross multiply
    8,902.79x = 13,358.33 × 3,971.91
  4. Step 4: Simplify right side
    8,902.79x = 53,058,084.51
  5. Step 5: Solve for x
    x = 53,058,084.51/8,902.79
  6. Step 6: Final answer
    x = 5,959.71

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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.