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Finding the Fourth Proportional to 8,491.33, 11,713.97 and 5,086.70

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Solution

The fourth proportional to 8,491.33, 11,713.97 and 5,086.70 is: 7,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.33 : 11,713.97 = 5,086.70 : x
  2. Step 2: Convert to fraction form
    8,491.33/11,713.97 = 5,086.70/x
  3. Step 3: Cross multiply
    8,491.33x = 11,713.97 × 5,086.70
  4. Step 4: Simplify right side
    8,491.33x = 59,585,405.35
  5. Step 5: Solve for x
    x = 59,585,405.35/8,491.33
  6. Step 6: Final answer
    x = 7,017.21

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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.