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Finding the Fourth Proportional to 5,487.32, 8,211.54 and 4,839.32

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Solution

The fourth proportional to 5,487.32, 8,211.54 and 4,839.32 is: 7,241.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.32 : 8,211.54 = 4,839.32 : x
  2. Step 2: Convert to fraction form
    5,487.32/8,211.54 = 4,839.32/x
  3. Step 3: Cross multiply
    5,487.32x = 8,211.54 × 4,839.32
  4. Step 4: Simplify right side
    5,487.32x = 39,738,269.75
  5. Step 5: Solve for x
    x = 39,738,269.75/5,487.32
  6. Step 6: Final answer
    x = 7,241.84

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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.