Home / 3,960.27-5,458.26-3,428.10

Finding the Fourth Proportional to 3,960.27, 5,458.26 and 3,428.10

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Solution

The fourth proportional to 3,960.27, 5,458.26 and 3,428.10 is: 4,724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.27 : 5,458.26 = 3,428.10 : x
  2. Step 2: Convert to fraction form
    3,960.27/5,458.26 = 3,428.10/x
  3. Step 3: Cross multiply
    3,960.27x = 5,458.26 × 3,428.10
  4. Step 4: Simplify right side
    3,960.27x = 18,711,461.11
  5. Step 5: Solve for x
    x = 18,711,461.11/3,960.27
  6. Step 6: Final answer
    x = 4,724.79

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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.