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Finding the Fourth Proportional to 3,980.74, 5,493 and 2,301.88

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Solution

The fourth proportional to 3,980.74, 5,493 and 2,301.88 is: 3,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.74 : 5,493 = 2,301.88 : x
  2. Step 2: Convert to fraction form
    3,980.74/5,493 = 2,301.88/x
  3. Step 3: Cross multiply
    3,980.74x = 5,493 × 2,301.88
  4. Step 4: Simplify right side
    3,980.74x = 12,644,226.84
  5. Step 5: Solve for x
    x = 12,644,226.84/3,980.74
  6. Step 6: Final answer
    x = 3,176.35

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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.