Home / 2,115.06-3,170.43-1,178.16

Finding the Fourth Proportional to 2,115.06, 3,170.43 and 1,178.16

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Solution

The fourth proportional to 2,115.06, 3,170.43 and 1,178.16 is: 1,766.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.06 : 3,170.43 = 1,178.16 : x
  2. Step 2: Convert to fraction form
    2,115.06/3,170.43 = 1,178.16/x
  3. Step 3: Cross multiply
    2,115.06x = 3,170.43 × 1,178.16
  4. Step 4: Simplify right side
    2,115.06x = 3,735,273.81
  5. Step 5: Solve for x
    x = 3,735,273.81/2,115.06
  6. Step 6: Final answer
    x = 1,766.04

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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.