Home / 2,724.13-4,082.59-991.09

Finding the Fourth Proportional to 2,724.13, 4,082.59 and 991.09

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Solution

The fourth proportional to 2,724.13, 4,082.59 and 991.09 is: 1,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.13 : 4,082.59 = 991.09 : x
  2. Step 2: Convert to fraction form
    2,724.13/4,082.59 = 991.09/x
  3. Step 3: Cross multiply
    2,724.13x = 4,082.59 × 991.09
  4. Step 4: Simplify right side
    2,724.13x = 4,046,214.12
  5. Step 5: Solve for x
    x = 4,046,214.12/2,724.13
  6. Step 6: Final answer
    x = 1,485.32

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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.