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Finding the Fourth Proportional to 3,617.61, 4,989.32 and 3,040.53

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Solution

The fourth proportional to 3,617.61, 4,989.32 and 3,040.53 is: 4,193.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.61 : 4,989.32 = 3,040.53 : x
  2. Step 2: Convert to fraction form
    3,617.61/4,989.32 = 3,040.53/x
  3. Step 3: Cross multiply
    3,617.61x = 4,989.32 × 3,040.53
  4. Step 4: Simplify right side
    3,617.61x = 15,170,177.14
  5. Step 5: Solve for x
    x = 15,170,177.14/3,617.61
  6. Step 6: Final answer
    x = 4,193.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.