Home / 2,135.97-2,947.56-1,191.69

Finding the Fourth Proportional to 2,135.97, 2,947.56 and 1,191.69

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Solution

The fourth proportional to 2,135.97, 2,947.56 and 1,191.69 is: 1,644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.97 : 2,947.56 = 1,191.69 : x
  2. Step 2: Convert to fraction form
    2,135.97/2,947.56 = 1,191.69/x
  3. Step 3: Cross multiply
    2,135.97x = 2,947.56 × 1,191.69
  4. Step 4: Simplify right side
    2,135.97x = 3,512,571.82
  5. Step 5: Solve for x
    x = 3,512,571.82/2,135.97
  6. Step 6: Final answer
    x = 1,644.49

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Double scale
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1.5x scale

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.