Home / 4,549.28-6,821.49-1,428.71

Finding the Fourth Proportional to 4,549.28, 6,821.49 and 1,428.71

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Solution

The fourth proportional to 4,549.28, 6,821.49 and 1,428.71 is: 2,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,549.28 : 6,821.49 = 1,428.71 : x
  2. Step 2: Convert to fraction form
    4,549.28/6,821.49 = 1,428.71/x
  3. Step 3: Cross multiply
    4,549.28x = 6,821.49 × 1,428.71
  4. Step 4: Simplify right side
    4,549.28x = 9,745,930.98
  5. Step 5: Solve for x
    x = 9,745,930.98/4,549.28
  6. Step 6: Final answer
    x = 2,142.30

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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.