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Finding the Fourth Proportional to 3,912.18, 5,870.02 and 1,721.54

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Solution

The fourth proportional to 3,912.18, 5,870.02 and 1,721.54 is: 2,583.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.18 : 5,870.02 = 1,721.54 : x
  2. Step 2: Convert to fraction form
    3,912.18/5,870.02 = 1,721.54/x
  3. Step 3: Cross multiply
    3,912.18x = 5,870.02 × 1,721.54
  4. Step 4: Simplify right side
    3,912.18x = 10,105,474.23
  5. Step 5: Solve for x
    x = 10,105,474.23/3,912.18
  6. Step 6: Final answer
    x = 2,583.08

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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.