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Finding the Fourth Proportional to 7,291.55, 10,939.07 and 2,361.20

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Solution

The fourth proportional to 7,291.55, 10,939.07 and 2,361.20 is: 3,542.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.55 : 10,939.07 = 2,361.20 : x
  2. Step 2: Convert to fraction form
    7,291.55/10,939.07 = 2,361.20/x
  3. Step 3: Cross multiply
    7,291.55x = 10,939.07 × 2,361.20
  4. Step 4: Simplify right side
    7,291.55x = 25,829,320.28
  5. Step 5: Solve for x
    x = 25,829,320.28/7,291.55
  6. Step 6: Final answer
    x = 3,542.36

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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.