Home / 1,912.48-2,869.12-614.86

Finding the Fourth Proportional to 1,912.48, 2,869.12 and 614.86

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Solution

The fourth proportional to 1,912.48, 2,869.12 and 614.86 is: 922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.48 : 2,869.12 = 614.86 : x
  2. Step 2: Convert to fraction form
    1,912.48/2,869.12 = 614.86/x
  3. Step 3: Cross multiply
    1,912.48x = 2,869.12 × 614.86
  4. Step 4: Simplify right side
    1,912.48x = 1,764,100.72
  5. Step 5: Solve for x
    x = 1,764,100.72/1,912.48
  6. Step 6: Final answer
    x = 922.42

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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.