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Finding the Fourth Proportional to 7,998.94, 12,008.82 and 5,378.18

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Solution

The fourth proportional to 7,998.94, 12,008.82 and 5,378.18 is: 8,074.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.94 : 12,008.82 = 5,378.18 : x
  2. Step 2: Convert to fraction form
    7,998.94/12,008.82 = 5,378.18/x
  3. Step 3: Cross multiply
    7,998.94x = 12,008.82 × 5,378.18
  4. Step 4: Simplify right side
    7,998.94x = 64,585,595.55
  5. Step 5: Solve for x
    x = 64,585,595.55/7,998.94
  6. Step 6: Final answer
    x = 8,074.27

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.