Home / 1,134.25-1,560.41-1,085.65

Finding the Fourth Proportional to 1,134.25, 1,560.41 and 1,085.65

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Solution

The fourth proportional to 1,134.25, 1,560.41 and 1,085.65 is: 1,493.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.25 : 1,560.41 = 1,085.65 : x
  2. Step 2: Convert to fraction form
    1,134.25/1,560.41 = 1,085.65/x
  3. Step 3: Cross multiply
    1,134.25x = 1,560.41 × 1,085.65
  4. Step 4: Simplify right side
    1,134.25x = 1,694,053.69
  5. Step 5: Solve for x
    x = 1,694,053.69/1,134.25
  6. Step 6: Final answer
    x = 1,493.55

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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.