Home / 2,821.16-4,229.66-1,089

Finding the Fourth Proportional to 2,821.16, 4,229.66 and 1,089

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Solution

The fourth proportional to 2,821.16, 4,229.66 and 1,089 is: 1,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.16 : 4,229.66 = 1,089 : x
  2. Step 2: Convert to fraction form
    2,821.16/4,229.66 = 1,089/x
  3. Step 3: Cross multiply
    2,821.16x = 4,229.66 × 1,089
  4. Step 4: Simplify right side
    2,821.16x = 4,606,099.74
  5. Step 5: Solve for x
    x = 4,606,099.74/2,821.16
  6. Step 6: Final answer
    x = 1,632.70

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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.