Home / 2,118.38-2,923.36-1,186.88

Finding the Fourth Proportional to 2,118.38, 2,923.36 and 1,186.88

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Solution

The fourth proportional to 2,118.38, 2,923.36 and 1,186.88 is: 1,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.38 : 2,923.36 = 1,186.88 : x
  2. Step 2: Convert to fraction form
    2,118.38/2,923.36 = 1,186.88/x
  3. Step 3: Cross multiply
    2,118.38x = 2,923.36 × 1,186.88
  4. Step 4: Simplify right side
    2,118.38x = 3,469,659.93
  5. Step 5: Solve for x
    x = 3,469,659.93/2,118.38
  6. Step 6: Final answer
    x = 1,637.89

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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.