Home / 2,429.96-3,642.48-1,388.68

Finding the Fourth Proportional to 2,429.96, 3,642.48 and 1,388.68

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Solution

The fourth proportional to 2,429.96, 3,642.48 and 1,388.68 is: 2,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429.96 : 3,642.48 = 1,388.68 : x
  2. Step 2: Convert to fraction form
    2,429.96/3,642.48 = 1,388.68/x
  3. Step 3: Cross multiply
    2,429.96x = 3,642.48 × 1,388.68
  4. Step 4: Simplify right side
    2,429.96x = 5,058,239.13
  5. Step 5: Solve for x
    x = 5,058,239.13/2,429.96
  6. Step 6: Final answer
    x = 2,081.61

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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.