Home / 2,164.90-3,249.78-867.28

Finding the Fourth Proportional to 2,164.90, 3,249.78 and 867.28

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Solution

The fourth proportional to 2,164.90, 3,249.78 and 867.28 is: 1,301.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.90 : 3,249.78 = 867.28 : x
  2. Step 2: Convert to fraction form
    2,164.90/3,249.78 = 867.28/x
  3. Step 3: Cross multiply
    2,164.90x = 3,249.78 × 867.28
  4. Step 4: Simplify right side
    2,164.90x = 2,818,469.20
  5. Step 5: Solve for x
    x = 2,818,469.20/2,164.90
  6. Step 6: Final answer
    x = 1,301.89

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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.