Home / 3,187.20-4,398.36-1,789.94

Finding the Fourth Proportional to 3,187.20, 4,398.36 and 1,789.94

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Solution

The fourth proportional to 3,187.20, 4,398.36 and 1,789.94 is: 2,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.20 : 4,398.36 = 1,789.94 : x
  2. Step 2: Convert to fraction form
    3,187.20/4,398.36 = 1,789.94/x
  3. Step 3: Cross multiply
    3,187.20x = 4,398.36 × 1,789.94
  4. Step 4: Simplify right side
    3,187.20x = 7,872,800.50
  5. Step 5: Solve for x
    x = 7,872,800.50/3,187.20
  6. Step 6: Final answer
    x = 2,470.13

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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.