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Finding the Fourth Proportional to 2,659.98, 3,988.36 and 1,101.01

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Solution

The fourth proportional to 2,659.98, 3,988.36 and 1,101.01 is: 1,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.98 : 3,988.36 = 1,101.01 : x
  2. Step 2: Convert to fraction form
    2,659.98/3,988.36 = 1,101.01/x
  3. Step 3: Cross multiply
    2,659.98x = 3,988.36 × 1,101.01
  4. Step 4: Simplify right side
    2,659.98x = 4,391,224.24
  5. Step 5: Solve for x
    x = 4,391,224.24/2,659.98
  6. Step 6: Final answer
    x = 1,650.85

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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.