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Finding the Fourth Proportional to 8,581.74, 12,876.93 and 3,391.26

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Solution

The fourth proportional to 8,581.74, 12,876.93 and 3,391.26 is: 5,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.74 : 12,876.93 = 3,391.26 : x
  2. Step 2: Convert to fraction form
    8,581.74/12,876.93 = 3,391.26/x
  3. Step 3: Cross multiply
    8,581.74x = 12,876.93 × 3,391.26
  4. Step 4: Simplify right side
    8,581.74x = 43,669,017.63
  5. Step 5: Solve for x
    x = 43,669,017.63/8,581.74
  6. Step 6: Final answer
    x = 5,088.60

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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.