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Finding the Fourth Proportional to 8,812.18, 13,219.89 and 7,183.18

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Solution

The fourth proportional to 8,812.18, 13,219.89 and 7,183.18 is: 10,776.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.18 : 13,219.89 = 7,183.18 : x
  2. Step 2: Convert to fraction form
    8,812.18/13,219.89 = 7,183.18/x
  3. Step 3: Cross multiply
    8,812.18x = 13,219.89 × 7,183.18
  4. Step 4: Simplify right side
    8,812.18x = 94,960,849.45
  5. Step 5: Solve for x
    x = 94,960,849.45/8,812.18
  6. Step 6: Final answer
    x = 10,776.09

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.