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Finding the Fourth Proportional to 8,818.18, 13,228.90 and 7,189.18

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Solution

The fourth proportional to 8,818.18, 13,228.90 and 7,189.18 is: 10,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.18 : 13,228.90 = 7,189.18 : x
  2. Step 2: Convert to fraction form
    8,818.18/13,228.90 = 7,189.18/x
  3. Step 3: Cross multiply
    8,818.18x = 13,228.90 × 7,189.18
  4. Step 4: Simplify right side
    8,818.18x = 95,104,943.30
  5. Step 5: Solve for x
    x = 95,104,943.30/8,818.18
  6. Step 6: Final answer
    x = 10,785.10

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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.