Home / 1,480.68-2,043.27-891.18

Finding the Fourth Proportional to 1,480.68, 2,043.27 and 891.18

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Solution

The fourth proportional to 1,480.68, 2,043.27 and 891.18 is: 1,229.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.68 : 2,043.27 = 891.18 : x
  2. Step 2: Convert to fraction form
    1,480.68/2,043.27 = 891.18/x
  3. Step 3: Cross multiply
    1,480.68x = 2,043.27 × 891.18
  4. Step 4: Simplify right side
    1,480.68x = 1,820,921.36
  5. Step 5: Solve for x
    x = 1,820,921.36/1,480.68
  6. Step 6: Final answer
    x = 1,229.79

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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.