Home / 3,718.88-5,131.28-2,147.52

Finding the Fourth Proportional to 3,718.88, 5,131.28 and 2,147.52

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Solution

The fourth proportional to 3,718.88, 5,131.28 and 2,147.52 is: 2,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.88 : 5,131.28 = 2,147.52 : x
  2. Step 2: Convert to fraction form
    3,718.88/5,131.28 = 2,147.52/x
  3. Step 3: Cross multiply
    3,718.88x = 5,131.28 × 2,147.52
  4. Step 4: Simplify right side
    3,718.88x = 11,019,526.43
  5. Step 5: Solve for x
    x = 11,019,526.43/3,718.88
  6. Step 6: Final answer
    x = 2,963.13

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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.