Home / 2,431.67-3,643.97-1,388.48

Finding the Fourth Proportional to 2,431.67, 3,643.97 and 1,388.48

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Solution

The fourth proportional to 2,431.67, 3,643.97 and 1,388.48 is: 2,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.67 : 3,643.97 = 1,388.48 : x
  2. Step 2: Convert to fraction form
    2,431.67/3,643.97 = 1,388.48/x
  3. Step 3: Cross multiply
    2,431.67x = 3,643.97 × 1,388.48
  4. Step 4: Simplify right side
    2,431.67x = 5,059,554.30
  5. Step 5: Solve for x
    x = 5,059,554.30/2,431.67
  6. Step 6: Final answer
    x = 2,080.70

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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.