Home / 3,321.80-4,976.16-1,856.48

Finding the Fourth Proportional to 3,321.80, 4,976.16 and 1,856.48

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Solution

The fourth proportional to 3,321.80, 4,976.16 and 1,856.48 is: 2,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.80 : 4,976.16 = 1,856.48 : x
  2. Step 2: Convert to fraction form
    3,321.80/4,976.16 = 1,856.48/x
  3. Step 3: Cross multiply
    3,321.80x = 4,976.16 × 1,856.48
  4. Step 4: Simplify right side
    3,321.80x = 9,238,141.52
  5. Step 5: Solve for x
    x = 9,238,141.52/3,321.80
  6. Step 6: Final answer
    x = 2,781.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.