Home / 2,129.21-3,191.65-1,348.97

Finding the Fourth Proportional to 2,129.21, 3,191.65 and 1,348.97

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Solution

The fourth proportional to 2,129.21, 3,191.65 and 1,348.97 is: 2,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.21 : 3,191.65 = 1,348.97 : x
  2. Step 2: Convert to fraction form
    2,129.21/3,191.65 = 1,348.97/x
  3. Step 3: Cross multiply
    2,129.21x = 3,191.65 × 1,348.97
  4. Step 4: Simplify right side
    2,129.21x = 4,305,417.40
  5. Step 5: Solve for x
    x = 4,305,417.40/2,129.21
  6. Step 6: Final answer
    x = 2,022.08

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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.