Home / 3,964.80-5,474.16-2,641.20

Finding the Fourth Proportional to 3,964.80, 5,474.16 and 2,641.20

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Solution

The fourth proportional to 3,964.80, 5,474.16 and 2,641.20 is: 3,646.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.80 : 5,474.16 = 2,641.20 : x
  2. Step 2: Convert to fraction form
    3,964.80/5,474.16 = 2,641.20/x
  3. Step 3: Cross multiply
    3,964.80x = 5,474.16 × 2,641.20
  4. Step 4: Simplify right side
    3,964.80x = 14,458,351.39
  5. Step 5: Solve for x
    x = 14,458,351.39/3,964.80
  6. Step 6: Final answer
    x = 3,646.68

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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.