Home / 5,529.28-7,629.78-3,172.18

Finding the Fourth Proportional to 5,529.28, 7,629.78 and 3,172.18

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Solution

The fourth proportional to 5,529.28, 7,629.78 and 3,172.18 is: 4,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,529.28 : 7,629.78 = 3,172.18 : x
  2. Step 2: Convert to fraction form
    5,529.28/7,629.78 = 3,172.18/x
  3. Step 3: Cross multiply
    5,529.28x = 7,629.78 × 3,172.18
  4. Step 4: Simplify right side
    5,529.28x = 24,203,035.52
  5. Step 5: Solve for x
    x = 24,203,035.52/5,529.28
  6. Step 6: Final answer
    x = 4,377.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.