Home / 1,912.88-2,869.32-614.72

Finding the Fourth Proportional to 1,912.88, 2,869.32 and 614.72

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Solution

The fourth proportional to 1,912.88, 2,869.32 and 614.72 is: 922.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.88 : 2,869.32 = 614.72 : x
  2. Step 2: Convert to fraction form
    1,912.88/2,869.32 = 614.72/x
  3. Step 3: Cross multiply
    1,912.88x = 2,869.32 × 614.72
  4. Step 4: Simplify right side
    1,912.88x = 1,763,828.39
  5. Step 5: Solve for x
    x = 1,763,828.39/1,912.88
  6. Step 6: Final answer
    x = 922.08

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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.