Home / 3,805.47-5,251.18-2,388.71

Finding the Fourth Proportional to 3,805.47, 5,251.18 and 2,388.71

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Solution

The fourth proportional to 3,805.47, 5,251.18 and 2,388.71 is: 3,296.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.47 : 5,251.18 = 2,388.71 : x
  2. Step 2: Convert to fraction form
    3,805.47/5,251.18 = 2,388.71/x
  3. Step 3: Cross multiply
    3,805.47x = 5,251.18 × 2,388.71
  4. Step 4: Simplify right side
    3,805.47x = 12,543,519.92
  5. Step 5: Solve for x
    x = 12,543,519.92/3,805.47
  6. Step 6: Final answer
    x = 3,296.18

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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.