Home / 2,821.40-4,229.24-1,359.74

Finding the Fourth Proportional to 2,821.40, 4,229.24 and 1,359.74

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Solution

The fourth proportional to 2,821.40, 4,229.24 and 1,359.74 is: 2,038.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.40 : 4,229.24 = 1,359.74 : x
  2. Step 2: Convert to fraction form
    2,821.40/4,229.24 = 1,359.74/x
  3. Step 3: Cross multiply
    2,821.40x = 4,229.24 × 1,359.74
  4. Step 4: Simplify right side
    2,821.40x = 5,750,666.80
  5. Step 5: Solve for x
    x = 5,750,666.80/2,821.40
  6. Step 6: Final answer
    x = 2,038.23

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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.