Home / 3,132.79-4,321.85-1,873.21

Finding the Fourth Proportional to 3,132.79, 4,321.85 and 1,873.21

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Solution

The fourth proportional to 3,132.79, 4,321.85 and 1,873.21 is: 2,584.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.79 : 4,321.85 = 1,873.21 : x
  2. Step 2: Convert to fraction form
    3,132.79/4,321.85 = 1,873.21/x
  3. Step 3: Cross multiply
    3,132.79x = 4,321.85 × 1,873.21
  4. Step 4: Simplify right side
    3,132.79x = 8,095,726.52
  5. Step 5: Solve for x
    x = 8,095,726.52/3,132.79
  6. Step 6: Final answer
    x = 2,584.19

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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.