Home / 3,721.78-5,135.52-2,397.28

Finding the Fourth Proportional to 3,721.78, 5,135.52 and 2,397.28

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Solution

The fourth proportional to 3,721.78, 5,135.52 and 2,397.28 is: 3,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.78 : 5,135.52 = 2,397.28 : x
  2. Step 2: Convert to fraction form
    3,721.78/5,135.52 = 2,397.28/x
  3. Step 3: Cross multiply
    3,721.78x = 5,135.52 × 2,397.28
  4. Step 4: Simplify right side
    3,721.78x = 12,311,279.39
  5. Step 5: Solve for x
    x = 12,311,279.39/3,721.78
  6. Step 6: Final answer
    x = 3,307.90

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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.