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Finding the Fourth Proportional to 6,981.76, 10,479.04 and 3,286.08

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Solution

The fourth proportional to 6,981.76, 10,479.04 and 3,286.08 is: 4,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.76 : 10,479.04 = 3,286.08 : x
  2. Step 2: Convert to fraction form
    6,981.76/10,479.04 = 3,286.08/x
  3. Step 3: Cross multiply
    6,981.76x = 10,479.04 × 3,286.08
  4. Step 4: Simplify right side
    6,981.76x = 34,434,963.76
  5. Step 5: Solve for x
    x = 34,434,963.76/6,981.76
  6. Step 6: Final answer
    x = 4,932.13

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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.