Home / 4,139.62-5,712.78-2,371.80

Finding the Fourth Proportional to 4,139.62, 5,712.78 and 2,371.80

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Solution

The fourth proportional to 4,139.62, 5,712.78 and 2,371.80 is: 3,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.62 : 5,712.78 = 2,371.80 : x
  2. Step 2: Convert to fraction form
    4,139.62/5,712.78 = 2,371.80/x
  3. Step 3: Cross multiply
    4,139.62x = 5,712.78 × 2,371.80
  4. Step 4: Simplify right side
    4,139.62x = 13,549,571.60
  5. Step 5: Solve for x
    x = 13,549,571.60/4,139.62
  6. Step 6: Final answer
    x = 3,273.14

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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.