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Finding the Fourth Proportional to 3,758.57, 5,186.61 and 2,079.88

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Solution

The fourth proportional to 3,758.57, 5,186.61 and 2,079.88 is: 2,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.57 : 5,186.61 = 2,079.88 : x
  2. Step 2: Convert to fraction form
    3,758.57/5,186.61 = 2,079.88/x
  3. Step 3: Cross multiply
    3,758.57x = 5,186.61 × 2,079.88
  4. Step 4: Simplify right side
    3,758.57x = 10,787,526.41
  5. Step 5: Solve for x
    x = 10,787,526.41/3,758.57
  6. Step 6: Final answer
    x = 2,870.11

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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.