Home / 1,998.32-2,757.80-1,159.28

Finding the Fourth Proportional to 1,998.32, 2,757.80 and 1,159.28

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Solution

The fourth proportional to 1,998.32, 2,757.80 and 1,159.28 is: 1,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.32 : 2,757.80 = 1,159.28 : x
  2. Step 2: Convert to fraction form
    1,998.32/2,757.80 = 1,159.28/x
  3. Step 3: Cross multiply
    1,998.32x = 2,757.80 × 1,159.28
  4. Step 4: Simplify right side
    1,998.32x = 3,197,042.80
  5. Step 5: Solve for x
    x = 3,197,042.80/1,998.32
  6. Step 6: Final answer
    x = 1,599.87

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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.