Home / 2,116.14-3,174.57-1,191.30

Finding the Fourth Proportional to 2,116.14, 3,174.57 and 1,191.30

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Solution

The fourth proportional to 2,116.14, 3,174.57 and 1,191.30 is: 1,787.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.14 : 3,174.57 = 1,191.30 : x
  2. Step 2: Convert to fraction form
    2,116.14/3,174.57 = 1,191.30/x
  3. Step 3: Cross multiply
    2,116.14x = 3,174.57 × 1,191.30
  4. Step 4: Simplify right side
    2,116.14x = 3,781,865.24
  5. Step 5: Solve for x
    x = 3,781,865.24/2,116.14
  6. Step 6: Final answer
    x = 1,787.15

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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.