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Finding the Fourth Proportional to 8,770.32, 12,105 and 5,236.20

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Solution

The fourth proportional to 8,770.32, 12,105 and 5,236.20 is: 7,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.32 : 12,105 = 5,236.20 : x
  2. Step 2: Convert to fraction form
    8,770.32/12,105 = 5,236.20/x
  3. Step 3: Cross multiply
    8,770.32x = 12,105 × 5,236.20
  4. Step 4: Simplify right side
    8,770.32x = 63,384,201
  5. Step 5: Solve for x
    x = 63,384,201/8,770.32
  6. Step 6: Final answer
    x = 7,227.13

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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.