Home / 2,728.36-3,761.17-2,169.06

Finding the Fourth Proportional to 2,728.36, 3,761.17 and 2,169.06

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Solution

The fourth proportional to 2,728.36, 3,761.17 and 2,169.06 is: 2,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.36 : 3,761.17 = 2,169.06 : x
  2. Step 2: Convert to fraction form
    2,728.36/3,761.17 = 2,169.06/x
  3. Step 3: Cross multiply
    2,728.36x = 3,761.17 × 2,169.06
  4. Step 4: Simplify right side
    2,728.36x = 8,158,203.40
  5. Step 5: Solve for x
    x = 8,158,203.40/2,728.36
  6. Step 6: Final answer
    x = 2,990.15

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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.