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Finding the Fourth Proportional to 6,710.91, 9,261.99 and 3,877.71

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Solution

The fourth proportional to 6,710.91, 9,261.99 and 3,877.71 is: 5,351.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,710.91 : 9,261.99 = 3,877.71 : x
  2. Step 2: Convert to fraction form
    6,710.91/9,261.99 = 3,877.71/x
  3. Step 3: Cross multiply
    6,710.91x = 9,261.99 × 3,877.71
  4. Step 4: Simplify right side
    6,710.91x = 35,915,311.24
  5. Step 5: Solve for x
    x = 35,915,311.24/6,710.91
  6. Step 6: Final answer
    x = 5,351.78

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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.