Home / 3,821.28-5,731.76-1,224.16

Finding the Fourth Proportional to 3,821.28, 5,731.76 and 1,224.16

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Solution

The fourth proportional to 3,821.28, 5,731.76 and 1,224.16 is: 1,836.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.28 : 5,731.76 = 1,224.16 : x
  2. Step 2: Convert to fraction form
    3,821.28/5,731.76 = 1,224.16/x
  3. Step 3: Cross multiply
    3,821.28x = 5,731.76 × 1,224.16
  4. Step 4: Simplify right side
    3,821.28x = 7,016,591.32
  5. Step 5: Solve for x
    x = 7,016,591.32/3,821.28
  6. Step 6: Final answer
    x = 1,836.19

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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.