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Finding the Fourth Proportional to 5,905.80, 8,850.60 and 4,812.30

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Solution

The fourth proportional to 5,905.80, 8,850.60 and 4,812.30 is: 7,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.80 : 8,850.60 = 4,812.30 : x
  2. Step 2: Convert to fraction form
    5,905.80/8,850.60 = 4,812.30/x
  3. Step 3: Cross multiply
    5,905.80x = 8,850.60 × 4,812.30
  4. Step 4: Simplify right side
    5,905.80x = 42,591,742.38
  5. Step 5: Solve for x
    x = 42,591,742.38/5,905.80
  6. Step 6: Final answer
    x = 7,211.85

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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.