Home / 2,251.75-3,381.36-1,391.53

Finding the Fourth Proportional to 2,251.75, 3,381.36 and 1,391.53

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Solution

The fourth proportional to 2,251.75, 3,381.36 and 1,391.53 is: 2,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.75 : 3,381.36 = 1,391.53 : x
  2. Step 2: Convert to fraction form
    2,251.75/3,381.36 = 1,391.53/x
  3. Step 3: Cross multiply
    2,251.75x = 3,381.36 × 1,391.53
  4. Step 4: Simplify right side
    2,251.75x = 4,705,263.88
  5. Step 5: Solve for x
    x = 4,705,263.88/2,251.75
  6. Step 6: Final answer
    x = 2,089.60

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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.