Home / 3,228.48-4,456.16-1,987.52

Finding the Fourth Proportional to 3,228.48, 4,456.16 and 1,987.52

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Solution

The fourth proportional to 3,228.48, 4,456.16 and 1,987.52 is: 2,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.48 : 4,456.16 = 1,987.52 : x
  2. Step 2: Convert to fraction form
    3,228.48/4,456.16 = 1,987.52/x
  3. Step 3: Cross multiply
    3,228.48x = 4,456.16 × 1,987.52
  4. Step 4: Simplify right side
    3,228.48x = 8,856,707.12
  5. Step 5: Solve for x
    x = 8,856,707.12/3,228.48
  6. Step 6: Final answer
    x = 2,743.31

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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.