Home / 2,164.24-2,987.85-1,418.86

Finding the Fourth Proportional to 2,164.24, 2,987.85 and 1,418.86

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Solution

The fourth proportional to 2,164.24, 2,987.85 and 1,418.86 is: 1,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.24 : 2,987.85 = 1,418.86 : x
  2. Step 2: Convert to fraction form
    2,164.24/2,987.85 = 1,418.86/x
  3. Step 3: Cross multiply
    2,164.24x = 2,987.85 × 1,418.86
  4. Step 4: Simplify right side
    2,164.24x = 4,239,340.85
  5. Step 5: Solve for x
    x = 4,239,340.85/2,164.24
  6. Step 6: Final answer
    x = 1,958.81

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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.