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Finding the Fourth Proportional to 8,884.70, 12,261.48 and 5,109.11

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Solution

The fourth proportional to 8,884.70, 12,261.48 and 5,109.11 is: 7,050.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,884.70 : 12,261.48 = 5,109.11 : x
  2. Step 2: Convert to fraction form
    8,884.70/12,261.48 = 5,109.11/x
  3. Step 3: Cross multiply
    8,884.70x = 12,261.48 × 5,109.11
  4. Step 4: Simplify right side
    8,884.70x = 62,645,250.08
  5. Step 5: Solve for x
    x = 62,645,250.08/8,884.70
  6. Step 6: Final answer
    x = 7,050.91

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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.