Home / 2,728.12-4,092.40-1,322.13

Finding the Fourth Proportional to 2,728.12, 4,092.40 and 1,322.13

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Solution

The fourth proportional to 2,728.12, 4,092.40 and 1,322.13 is: 1,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.12 : 4,092.40 = 1,322.13 : x
  2. Step 2: Convert to fraction form
    2,728.12/4,092.40 = 1,322.13/x
  3. Step 3: Cross multiply
    2,728.12x = 4,092.40 × 1,322.13
  4. Step 4: Simplify right side
    2,728.12x = 5,410,684.81
  5. Step 5: Solve for x
    x = 5,410,684.81/2,728.12
  6. Step 6: Final answer
    x = 1,983.30

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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.