Home / 3,131.52-4,321.80-2,083.92

Finding the Fourth Proportional to 3,131.52, 4,321.80 and 2,083.92

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Solution

The fourth proportional to 3,131.52, 4,321.80 and 2,083.92 is: 2,876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.52 : 4,321.80 = 2,083.92 : x
  2. Step 2: Convert to fraction form
    3,131.52/4,321.80 = 2,083.92/x
  3. Step 3: Cross multiply
    3,131.52x = 4,321.80 × 2,083.92
  4. Step 4: Simplify right side
    3,131.52x = 9,006,285.46
  5. Step 5: Solve for x
    x = 9,006,285.46/3,131.52
  6. Step 6: Final answer
    x = 2,876.01

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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.