Home / 2,180.96-3,251.88-2,142.08

Finding the Fourth Proportional to 2,180.96, 3,251.88 and 2,142.08

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Solution

The fourth proportional to 2,180.96, 3,251.88 and 2,142.08 is: 3,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.96 : 3,251.88 = 2,142.08 : x
  2. Step 2: Convert to fraction form
    2,180.96/3,251.88 = 2,142.08/x
  3. Step 3: Cross multiply
    2,180.96x = 3,251.88 × 2,142.08
  4. Step 4: Simplify right side
    2,180.96x = 6,965,787.11
  5. Step 5: Solve for x
    x = 6,965,787.11/2,180.96
  6. Step 6: Final answer
    x = 3,193.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.