Home / 2,428.07-3,642.62-1,388.57

Finding the Fourth Proportional to 2,428.07, 3,642.62 and 1,388.57

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Solution

The fourth proportional to 2,428.07, 3,642.62 and 1,388.57 is: 2,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.07 : 3,642.62 = 1,388.57 : x
  2. Step 2: Convert to fraction form
    2,428.07/3,642.62 = 1,388.57/x
  3. Step 3: Cross multiply
    2,428.07x = 3,642.62 × 1,388.57
  4. Step 4: Simplify right side
    2,428.07x = 5,058,007.70
  5. Step 5: Solve for x
    x = 5,058,007.70/2,428.07
  6. Step 6: Final answer
    x = 2,083.14

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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.