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Finding the Fourth Proportional to 2,497.67, 3,745.80 and 742.61

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Solution

The fourth proportional to 2,497.67, 3,745.80 and 742.61 is: 1,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,497.67 : 3,745.80 = 742.61 : x
  2. Step 2: Convert to fraction form
    2,497.67/3,745.80 = 742.61/x
  3. Step 3: Cross multiply
    2,497.67x = 3,745.80 × 742.61
  4. Step 4: Simplify right side
    2,497.67x = 2,781,649.81
  5. Step 5: Solve for x
    x = 2,781,649.81/2,497.67
  6. Step 6: Final answer
    x = 1,113.70

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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.