Home / 2,489.36-3,726.14-1,390.39

Finding the Fourth Proportional to 2,489.36, 3,726.14 and 1,390.39

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Solution

The fourth proportional to 2,489.36, 3,726.14 and 1,390.39 is: 2,081.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.36 : 3,726.14 = 1,390.39 : x
  2. Step 2: Convert to fraction form
    2,489.36/3,726.14 = 1,390.39/x
  3. Step 3: Cross multiply
    2,489.36x = 3,726.14 × 1,390.39
  4. Step 4: Simplify right side
    2,489.36x = 5,180,771.53
  5. Step 5: Solve for x
    x = 5,180,771.53/2,489.36
  6. Step 6: Final answer
    x = 2,081.17

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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.