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Finding the Fourth Proportional to 8,246.90, 11,381.10 and 4,891.70

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Solution

The fourth proportional to 8,246.90, 11,381.10 and 4,891.70 is: 6,750.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,246.90 : 11,381.10 = 4,891.70 : x
  2. Step 2: Convert to fraction form
    8,246.90/11,381.10 = 4,891.70/x
  3. Step 3: Cross multiply
    8,246.90x = 11,381.10 × 4,891.70
  4. Step 4: Simplify right side
    8,246.90x = 55,672,926.87
  5. Step 5: Solve for x
    x = 55,672,926.87/8,246.90
  6. Step 6: Final answer
    x = 6,750.77

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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.