Home / 1,619.48-2,428.42-741.72

Finding the Fourth Proportional to 1,619.48, 2,428.42 and 741.72

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Solution

The fourth proportional to 1,619.48, 2,428.42 and 741.72 is: 1,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.48 : 2,428.42 = 741.72 : x
  2. Step 2: Convert to fraction form
    1,619.48/2,428.42 = 741.72/x
  3. Step 3: Cross multiply
    1,619.48x = 2,428.42 × 741.72
  4. Step 4: Simplify right side
    1,619.48x = 1,801,207.68
  5. Step 5: Solve for x
    x = 1,801,207.68/1,619.48
  6. Step 6: Final answer
    x = 1,112.21

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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.