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Finding the Fourth Proportional to 6,339.80, 8,747.52 and 3,981.08

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Solution

The fourth proportional to 6,339.80, 8,747.52 and 3,981.08 is: 5,493.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.80 : 8,747.52 = 3,981.08 : x
  2. Step 2: Convert to fraction form
    6,339.80/8,747.52 = 3,981.08/x
  3. Step 3: Cross multiply
    6,339.80x = 8,747.52 × 3,981.08
  4. Step 4: Simplify right side
    6,339.80x = 34,824,576.92
  5. Step 5: Solve for x
    x = 34,824,576.92/6,339.80
  6. Step 6: Final answer
    x = 5,493.01

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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.