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Finding the Fourth Proportional to 5,657.79, 8,486.79 and 2,696.55

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Solution

The fourth proportional to 5,657.79, 8,486.79 and 2,696.55 is: 4,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.79 : 8,486.79 = 2,696.55 : x
  2. Step 2: Convert to fraction form
    5,657.79/8,486.79 = 2,696.55/x
  3. Step 3: Cross multiply
    5,657.79x = 8,486.79 × 2,696.55
  4. Step 4: Simplify right side
    5,657.79x = 22,885,053.57
  5. Step 5: Solve for x
    x = 22,885,053.57/5,657.79
  6. Step 6: Final answer
    x = 4,044.88

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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.