Home / 5,629.15-7,769.30-3,711.60

Finding the Fourth Proportional to 5,629.15, 7,769.30 and 3,711.60

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Solution

The fourth proportional to 5,629.15, 7,769.30 and 3,711.60 is: 5,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.15 : 7,769.30 = 3,711.60 : x
  2. Step 2: Convert to fraction form
    5,629.15/7,769.30 = 3,711.60/x
  3. Step 3: Cross multiply
    5,629.15x = 7,769.30 × 3,711.60
  4. Step 4: Simplify right side
    5,629.15x = 28,836,550.12
  5. Step 5: Solve for x
    x = 28,836,550.12/5,629.15
  6. Step 6: Final answer
    x = 5,122.72

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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.