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Finding the Fourth Proportional to 2,174.98, 3,001.47 and 1,230.75

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Solution

The fourth proportional to 2,174.98, 3,001.47 and 1,230.75 is: 1,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.98 : 3,001.47 = 1,230.75 : x
  2. Step 2: Convert to fraction form
    2,174.98/3,001.47 = 1,230.75/x
  3. Step 3: Cross multiply
    2,174.98x = 3,001.47 × 1,230.75
  4. Step 4: Simplify right side
    2,174.98x = 3,694,052.10
  5. Step 5: Solve for x
    x = 3,694,052.10/2,174.98
  6. Step 6: Final answer
    x = 1,698.43

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1.5x scale

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.