Home / 1,292.92-1,939.38-1,100.14

Finding the Fourth Proportional to 1,292.92, 1,939.38 and 1,100.14

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Solution

The fourth proportional to 1,292.92, 1,939.38 and 1,100.14 is: 1,650.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.92 : 1,939.38 = 1,100.14 : x
  2. Step 2: Convert to fraction form
    1,292.92/1,939.38 = 1,100.14/x
  3. Step 3: Cross multiply
    1,292.92x = 1,939.38 × 1,100.14
  4. Step 4: Simplify right side
    1,292.92x = 2,133,589.51
  5. Step 5: Solve for x
    x = 2,133,589.51/1,292.92
  6. Step 6: Final answer
    x = 1,650.21

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Similar ratio
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1.5x scale

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.