Home / 2,135.91-2,947.76-1,296.42

Finding the Fourth Proportional to 2,135.91, 2,947.76 and 1,296.42

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Solution

The fourth proportional to 2,135.91, 2,947.76 and 1,296.42 is: 1,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.91 : 2,947.76 = 1,296.42 : x
  2. Step 2: Convert to fraction form
    2,135.91/2,947.76 = 1,296.42/x
  3. Step 3: Cross multiply
    2,135.91x = 2,947.76 × 1,296.42
  4. Step 4: Simplify right side
    2,135.91x = 3,821,535.02
  5. Step 5: Solve for x
    x = 3,821,535.02/2,135.91
  6. Step 6: Final answer
    x = 1,789.18

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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.