Home / 3,186.71-4,398.50-1,789.91

Finding the Fourth Proportional to 3,186.71, 4,398.50 and 1,789.91

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Solution

The fourth proportional to 3,186.71, 4,398.50 and 1,789.91 is: 2,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.71 : 4,398.50 = 1,789.91 : x
  2. Step 2: Convert to fraction form
    3,186.71/4,398.50 = 1,789.91/x
  3. Step 3: Cross multiply
    3,186.71x = 4,398.50 × 1,789.91
  4. Step 4: Simplify right side
    3,186.71x = 7,872,919.14
  5. Step 5: Solve for x
    x = 7,872,919.14/3,186.71
  6. Step 6: Final answer
    x = 2,470.55

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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.