Home / 1,248.12-1,722.06-806.04

Finding the Fourth Proportional to 1,248.12, 1,722.06 and 806.04

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Solution

The fourth proportional to 1,248.12, 1,722.06 and 806.04 is: 1,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.12 : 1,722.06 = 806.04 : x
  2. Step 2: Convert to fraction form
    1,248.12/1,722.06 = 806.04/x
  3. Step 3: Cross multiply
    1,248.12x = 1,722.06 × 806.04
  4. Step 4: Simplify right side
    1,248.12x = 1,388,049.24
  5. Step 5: Solve for x
    x = 1,388,049.24/1,248.12
  6. Step 6: Final answer
    x = 1,112.11

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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.