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Finding the Fourth Proportional to 3,752.77, 5,179.10 and 2,159.90

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Solution

The fourth proportional to 3,752.77, 5,179.10 and 2,159.90 is: 2,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.77 : 5,179.10 = 2,159.90 : x
  2. Step 2: Convert to fraction form
    3,752.77/5,179.10 = 2,159.90/x
  3. Step 3: Cross multiply
    3,752.77x = 5,179.10 × 2,159.90
  4. Step 4: Simplify right side
    3,752.77x = 11,186,338.09
  5. Step 5: Solve for x
    x = 11,186,338.09/3,752.77
  6. Step 6: Final answer
    x = 2,980.82

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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.