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Finding the Fourth Proportional to 2,393.16, 3,589.74 and 749.75

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Solution

The fourth proportional to 2,393.16, 3,589.74 and 749.75 is: 1,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.16 : 3,589.74 = 749.75 : x
  2. Step 2: Convert to fraction form
    2,393.16/3,589.74 = 749.75/x
  3. Step 3: Cross multiply
    2,393.16x = 3,589.74 × 749.75
  4. Step 4: Simplify right side
    2,393.16x = 2,691,389.62
  5. Step 5: Solve for x
    x = 2,691,389.62/2,393.16
  6. Step 6: Final answer
    x = 1,124.62

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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.