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Finding the Fourth Proportional to 8,711.75, 12,014.07 and 6,719.15

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Solution

The fourth proportional to 8,711.75, 12,014.07 and 6,719.15 is: 9,266.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.75 : 12,014.07 = 6,719.15 : x
  2. Step 2: Convert to fraction form
    8,711.75/12,014.07 = 6,719.15/x
  3. Step 3: Cross multiply
    8,711.75x = 12,014.07 × 6,719.15
  4. Step 4: Simplify right side
    8,711.75x = 80,724,338.44
  5. Step 5: Solve for x
    x = 80,724,338.44/8,711.75
  6. Step 6: Final answer
    x = 9,266.14

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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.