Home / 3,617.20-5,429.76-2,805.28

Finding the Fourth Proportional to 3,617.20, 5,429.76 and 2,805.28

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Solution

The fourth proportional to 3,617.20, 5,429.76 and 2,805.28 is: 4,210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.20 : 5,429.76 = 2,805.28 : x
  2. Step 2: Convert to fraction form
    3,617.20/5,429.76 = 2,805.28/x
  3. Step 3: Cross multiply
    3,617.20x = 5,429.76 × 2,805.28
  4. Step 4: Simplify right side
    3,617.20x = 15,231,997.13
  5. Step 5: Solve for x
    x = 15,231,997.13/3,617.20
  6. Step 6: Final answer
    x = 4,210.99

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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.