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Finding the Fourth Proportional to 5,381.54, 8,072.55 and 1,683.85

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Solution

The fourth proportional to 5,381.54, 8,072.55 and 1,683.85 is: 2,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.54 : 8,072.55 = 1,683.85 : x
  2. Step 2: Convert to fraction form
    5,381.54/8,072.55 = 1,683.85/x
  3. Step 3: Cross multiply
    5,381.54x = 8,072.55 × 1,683.85
  4. Step 4: Simplify right side
    5,381.54x = 13,592,922.95
  5. Step 5: Solve for x
    x = 13,592,922.95/5,381.54
  6. Step 6: Final answer
    x = 2,525.84

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Half scale
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Double scale
Find fourth proportional to 5,382.54, 8,074.05 and 1,684.85
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.