Home / 1,951.23-2,691.80-1,122.75

Finding the Fourth Proportional to 1,951.23, 2,691.80 and 1,122.75

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Solution

The fourth proportional to 1,951.23, 2,691.80 and 1,122.75 is: 1,548.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.23 : 2,691.80 = 1,122.75 : x
  2. Step 2: Convert to fraction form
    1,951.23/2,691.80 = 1,122.75/x
  3. Step 3: Cross multiply
    1,951.23x = 2,691.80 × 1,122.75
  4. Step 4: Simplify right side
    1,951.23x = 3,022,212.84
  5. Step 5: Solve for x
    x = 3,022,212.84/1,951.23
  6. Step 6: Final answer
    x = 1,548.88

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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.