Home / 2,132.38-2,942.90-1,188.33

Finding the Fourth Proportional to 2,132.38, 2,942.90 and 1,188.33

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Solution

The fourth proportional to 2,132.38, 2,942.90 and 1,188.33 is: 1,640.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.38 : 2,942.90 = 1,188.33 : x
  2. Step 2: Convert to fraction form
    2,132.38/2,942.90 = 1,188.33/x
  3. Step 3: Cross multiply
    2,132.38x = 2,942.90 × 1,188.33
  4. Step 4: Simplify right side
    2,132.38x = 3,497,121.64
  5. Step 5: Solve for x
    x = 3,497,121.64/2,132.38
  6. Step 6: Final answer
    x = 1,640.01

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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.