Home / 3,805.71-5,251.73-2,390.15

Finding the Fourth Proportional to 3,805.71, 5,251.73 and 2,390.15

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Solution

The fourth proportional to 3,805.71, 5,251.73 and 2,390.15 is: 3,298.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.71 : 5,251.73 = 2,390.15 : x
  2. Step 2: Convert to fraction form
    3,805.71/5,251.73 = 2,390.15/x
  3. Step 3: Cross multiply
    3,805.71x = 5,251.73 × 2,390.15
  4. Step 4: Simplify right side
    3,805.71x = 12,552,384.25
  5. Step 5: Solve for x
    x = 12,552,384.25/3,805.71
  6. Step 6: Final answer
    x = 3,298.30

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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.