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Finding the Fourth Proportional to 3,912.90, 5,870.18 and 3,000.03

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Solution

The fourth proportional to 3,912.90, 5,870.18 and 3,000.03 is: 4,500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.90 : 5,870.18 = 3,000.03 : x
  2. Step 2: Convert to fraction form
    3,912.90/5,870.18 = 3,000.03/x
  3. Step 3: Cross multiply
    3,912.90x = 5,870.18 × 3,000.03
  4. Step 4: Simplify right side
    3,912.90x = 17,610,716.11
  5. Step 5: Solve for x
    x = 17,610,716.11/3,912.90
  6. Step 6: Final answer
    x = 4,500.68

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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.