Home / 1,614.22-2,420.61-748.78

Finding the Fourth Proportional to 1,614.22, 2,420.61 and 748.78

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Solution

The fourth proportional to 1,614.22, 2,420.61 and 748.78 is: 1,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.22 : 2,420.61 = 748.78 : x
  2. Step 2: Convert to fraction form
    1,614.22/2,420.61 = 748.78/x
  3. Step 3: Cross multiply
    1,614.22x = 2,420.61 × 748.78
  4. Step 4: Simplify right side
    1,614.22x = 1,812,504.36
  5. Step 5: Solve for x
    x = 1,812,504.36/1,614.22
  6. Step 6: Final answer
    x = 1,122.84

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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.