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Finding the Fourth Proportional to 2,493.50, 3,740.40 and 762.14

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Solution

The fourth proportional to 2,493.50, 3,740.40 and 762.14 is: 1,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,493.50 : 3,740.40 = 762.14 : x
  2. Step 2: Convert to fraction form
    2,493.50/3,740.40 = 762.14/x
  3. Step 3: Cross multiply
    2,493.50x = 3,740.40 × 762.14
  4. Step 4: Simplify right side
    2,493.50x = 2,850,708.46
  5. Step 5: Solve for x
    x = 2,850,708.46/2,493.50
  6. Step 6: Final answer
    x = 1,143.26

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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.