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Finding the Fourth Proportional to 1,596.42, 2,393.91 and 938.61

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Solution

The fourth proportional to 1,596.42, 2,393.91 and 938.61 is: 1,407.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,596.42 : 2,393.91 = 938.61 : x
  2. Step 2: Convert to fraction form
    1,596.42/2,393.91 = 938.61/x
  3. Step 3: Cross multiply
    1,596.42x = 2,393.91 × 938.61
  4. Step 4: Simplify right side
    1,596.42x = 2,246,947.87
  5. Step 5: Solve for x
    x = 2,246,947.87/1,596.42
  6. Step 6: Final answer
    x = 1,407.49

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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.