Home / 3,749.87-5,175.15-2,178.47

Finding the Fourth Proportional to 3,749.87, 5,175.15 and 2,178.47

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Solution

The fourth proportional to 3,749.87, 5,175.15 and 2,178.47 is: 3,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.87 : 5,175.15 = 2,178.47 : x
  2. Step 2: Convert to fraction form
    3,749.87/5,175.15 = 2,178.47/x
  3. Step 3: Cross multiply
    3,749.87x = 5,175.15 × 2,178.47
  4. Step 4: Simplify right side
    3,749.87x = 11,273,909.02
  5. Step 5: Solve for x
    x = 11,273,909.02/3,749.87
  6. Step 6: Final answer
    x = 3,006.48

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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.