Home / 2,114.88-3,169.04-1,291.92

Finding the Fourth Proportional to 2,114.88, 3,169.04 and 1,291.92

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Solution

The fourth proportional to 2,114.88, 3,169.04 and 1,291.92 is: 1,935.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.88 : 3,169.04 = 1,291.92 : x
  2. Step 2: Convert to fraction form
    2,114.88/3,169.04 = 1,291.92/x
  3. Step 3: Cross multiply
    2,114.88x = 3,169.04 × 1,291.92
  4. Step 4: Simplify right side
    2,114.88x = 4,094,146.16
  5. Step 5: Solve for x
    x = 4,094,146.16/2,114.88
  6. Step 6: Final answer
    x = 1,935.88

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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.