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Finding the Fourth Proportional to 5,381.82, 8,072.90 and 1,486.23

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Solution

The fourth proportional to 5,381.82, 8,072.90 and 1,486.23 is: 2,229.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.82 : 8,072.90 = 1,486.23 : x
  2. Step 2: Convert to fraction form
    5,381.82/8,072.90 = 1,486.23/x
  3. Step 3: Cross multiply
    5,381.82x = 8,072.90 × 1,486.23
  4. Step 4: Simplify right side
    5,381.82x = 11,998,178.74
  5. Step 5: Solve for x
    x = 11,998,178.74/5,381.82
  6. Step 6: Final answer
    x = 2,229.39

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Half scale
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Double scale
Find fourth proportional to 5,382.82, 8,074.40 and 1,487.23
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.