Home / 1,412.62-1,945.98-1,080.92

Finding the Fourth Proportional to 1,412.62, 1,945.98 and 1,080.92

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Solution

The fourth proportional to 1,412.62, 1,945.98 and 1,080.92 is: 1,489.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.62 : 1,945.98 = 1,080.92 : x
  2. Step 2: Convert to fraction form
    1,412.62/1,945.98 = 1,080.92/x
  3. Step 3: Cross multiply
    1,412.62x = 1,945.98 × 1,080.92
  4. Step 4: Simplify right side
    1,412.62x = 2,103,448.70
  5. Step 5: Solve for x
    x = 2,103,448.70/1,412.62
  6. Step 6: Final answer
    x = 1,489.04

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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.