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Finding the Fourth Proportional to 6,392.80, 9,589.20 and 3,282.40

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Solution

The fourth proportional to 6,392.80, 9,589.20 and 3,282.40 is: 4,923.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.80 : 9,589.20 = 3,282.40 : x
  2. Step 2: Convert to fraction form
    6,392.80/9,589.20 = 3,282.40/x
  3. Step 3: Cross multiply
    6,392.80x = 9,589.20 × 3,282.40
  4. Step 4: Simplify right side
    6,392.80x = 31,475,590.08
  5. Step 5: Solve for x
    x = 31,475,590.08/6,392.80
  6. Step 6: Final answer
    x = 4,923.60

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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.