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Finding the Fourth Proportional to 8,886.12, 13,329.18 and 5,180.64

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Solution

The fourth proportional to 8,886.12, 13,329.18 and 5,180.64 is: 7,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.12 : 13,329.18 = 5,180.64 : x
  2. Step 2: Convert to fraction form
    8,886.12/13,329.18 = 5,180.64/x
  3. Step 3: Cross multiply
    8,886.12x = 13,329.18 × 5,180.64
  4. Step 4: Simplify right side
    8,886.12x = 69,053,683.08
  5. Step 5: Solve for x
    x = 69,053,683.08/8,886.12
  6. Step 6: Final answer
    x = 7,770.96

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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.