Home / 6,464.80-9,679.92-3,380.32

Finding the Fourth Proportional to 6,464.80, 9,679.92 and 3,380.32

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Solution

The fourth proportional to 6,464.80, 9,679.92 and 3,380.32 is: 5,061.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.80 : 9,679.92 = 3,380.32 : x
  2. Step 2: Convert to fraction form
    6,464.80/9,679.92 = 3,380.32/x
  3. Step 3: Cross multiply
    6,464.80x = 9,679.92 × 3,380.32
  4. Step 4: Simplify right side
    6,464.80x = 32,721,227.17
  5. Step 5: Solve for x
    x = 32,721,227.17/6,464.80
  6. Step 6: Final answer
    x = 5,061.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.