Home / 3,747.87-5,172.39-2,176.47

Finding the Fourth Proportional to 3,747.87, 5,172.39 and 2,176.47

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Solution

The fourth proportional to 3,747.87, 5,172.39 and 2,176.47 is: 3,003.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.87 : 5,172.39 = 2,176.47 : x
  2. Step 2: Convert to fraction form
    3,747.87/5,172.39 = 2,176.47/x
  3. Step 3: Cross multiply
    3,747.87x = 5,172.39 × 2,176.47
  4. Step 4: Simplify right side
    3,747.87x = 11,257,551.66
  5. Step 5: Solve for x
    x = 11,257,551.66/3,747.87
  6. Step 6: Final answer
    x = 3,003.72

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1.5x scale

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.