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Finding the Fourth Proportional to 1,959.11, 2,934.81 and 1,135.65

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Solution

The fourth proportional to 1,959.11, 2,934.81 and 1,135.65 is: 1,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.11 : 2,934.81 = 1,135.65 : x
  2. Step 2: Convert to fraction form
    1,959.11/2,934.81 = 1,135.65/x
  3. Step 3: Cross multiply
    1,959.11x = 2,934.81 × 1,135.65
  4. Step 4: Simplify right side
    1,959.11x = 3,332,921.24
  5. Step 5: Solve for x
    x = 3,332,921.24/1,959.11
  6. Step 6: Final answer
    x = 1,701.24

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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.