Home / 2,169.19-3,250.95-871.57

Finding the Fourth Proportional to 2,169.19, 3,250.95 and 871.57

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Solution

The fourth proportional to 2,169.19, 3,250.95 and 871.57 is: 1,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.19 : 3,250.95 = 871.57 : x
  2. Step 2: Convert to fraction form
    2,169.19/3,250.95 = 871.57/x
  3. Step 3: Cross multiply
    2,169.19x = 3,250.95 × 871.57
  4. Step 4: Simplify right side
    2,169.19x = 2,833,431.29
  5. Step 5: Solve for x
    x = 2,833,431.29/2,169.19
  6. Step 6: Final answer
    x = 1,306.22

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1.5x scale

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.