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Finding the Fourth Proportional to 8,708.96, 12,019.20 and 5,352.32

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Solution

The fourth proportional to 8,708.96, 12,019.20 and 5,352.32 is: 7,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.96 : 12,019.20 = 5,352.32 : x
  2. Step 2: Convert to fraction form
    8,708.96/12,019.20 = 5,352.32/x
  3. Step 3: Cross multiply
    8,708.96x = 12,019.20 × 5,352.32
  4. Step 4: Simplify right side
    8,708.96x = 64,330,604.54
  5. Step 5: Solve for x
    x = 64,330,604.54/8,708.96
  6. Step 6: Final answer
    x = 7,386.71

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Half scale
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Similar ratio
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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.