Home / 3,960.26-5,458.28-3,428.09

Finding the Fourth Proportional to 3,960.26, 5,458.28 and 3,428.09

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Solution

The fourth proportional to 3,960.26, 5,458.28 and 3,428.09 is: 4,724.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.26 : 5,458.28 = 3,428.09 : x
  2. Step 2: Convert to fraction form
    3,960.26/5,458.28 = 3,428.09/x
  3. Step 3: Cross multiply
    3,960.26x = 5,458.28 × 3,428.09
  4. Step 4: Simplify right side
    3,960.26x = 18,711,430.65
  5. Step 5: Solve for x
    x = 18,711,430.65/3,960.26
  6. Step 6: Final answer
    x = 4,724.80

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1.5x scale

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.