Home / 2,253.12-3,109.92-1,321.92

Finding the Fourth Proportional to 2,253.12, 3,109.92 and 1,321.92

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Solution

The fourth proportional to 2,253.12, 3,109.92 and 1,321.92 is: 1,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.12 : 3,109.92 = 1,321.92 : x
  2. Step 2: Convert to fraction form
    2,253.12/3,109.92 = 1,321.92/x
  3. Step 3: Cross multiply
    2,253.12x = 3,109.92 × 1,321.92
  4. Step 4: Simplify right side
    2,253.12x = 4,111,065.45
  5. Step 5: Solve for x
    x = 4,111,065.45/2,253.12
  6. Step 6: Final answer
    x = 1,824.61

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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.