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Finding the Fourth Proportional to 1,958.62, 2,937.61 and 725.74

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Solution

The fourth proportional to 1,958.62, 2,937.61 and 725.74 is: 1,088.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.62 : 2,937.61 = 725.74 : x
  2. Step 2: Convert to fraction form
    1,958.62/2,937.61 = 725.74/x
  3. Step 3: Cross multiply
    1,958.62x = 2,937.61 × 725.74
  4. Step 4: Simplify right side
    1,958.62x = 2,131,941.08
  5. Step 5: Solve for x
    x = 2,131,941.08/1,958.62
  6. Step 6: Final answer
    x = 1,088.49

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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.