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Finding the Fourth Proportional to 8,015.12, 11,060.90 and 4,478.39

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Solution

The fourth proportional to 8,015.12, 11,060.90 and 4,478.39 is: 6,180.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.12 : 11,060.90 = 4,478.39 : x
  2. Step 2: Convert to fraction form
    8,015.12/11,060.90 = 4,478.39/x
  3. Step 3: Cross multiply
    8,015.12x = 11,060.90 × 4,478.39
  4. Step 4: Simplify right side
    8,015.12x = 49,535,046.01
  5. Step 5: Solve for x
    x = 49,535,046.01/8,015.12
  6. Step 6: Final answer
    x = 6,180.20

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Half scale
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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.