Home / 1,408.14-2,110.62-859.13

Finding the Fourth Proportional to 1,408.14, 2,110.62 and 859.13

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Solution

The fourth proportional to 1,408.14, 2,110.62 and 859.13 is: 1,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.14 : 2,110.62 = 859.13 : x
  2. Step 2: Convert to fraction form
    1,408.14/2,110.62 = 859.13/x
  3. Step 3: Cross multiply
    1,408.14x = 2,110.62 × 859.13
  4. Step 4: Simplify right side
    1,408.14x = 1,813,286.41
  5. Step 5: Solve for x
    x = 1,813,286.41/1,408.14
  6. Step 6: Final answer
    x = 1,287.72

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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.