Home / 3,132.24-4,321.26-2,187.78

Finding the Fourth Proportional to 3,132.24, 4,321.26 and 2,187.78

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Solution

The fourth proportional to 3,132.24, 4,321.26 and 2,187.78 is: 3,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.24 : 4,321.26 = 2,187.78 : x
  2. Step 2: Convert to fraction form
    3,132.24/4,321.26 = 2,187.78/x
  3. Step 3: Cross multiply
    3,132.24x = 4,321.26 × 2,187.78
  4. Step 4: Simplify right side
    3,132.24x = 9,453,966.20
  5. Step 5: Solve for x
    x = 9,453,966.20/3,132.24
  6. Step 6: Final answer
    x = 3,018.28

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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.