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Finding the Fourth Proportional to 1,250.62, 1,724.92 and 1,108.99

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Solution

The fourth proportional to 1,250.62, 1,724.92 and 1,108.99 is: 1,529.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.62 : 1,724.92 = 1,108.99 : x
  2. Step 2: Convert to fraction form
    1,250.62/1,724.92 = 1,108.99/x
  3. Step 3: Cross multiply
    1,250.62x = 1,724.92 × 1,108.99
  4. Step 4: Simplify right side
    1,250.62x = 1,912,919.03
  5. Step 5: Solve for x
    x = 1,912,919.03/1,250.62
  6. Step 6: Final answer
    x = 1,529.58

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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.