Home / 1,081.35-1,493.64-1,019.79

Finding the Fourth Proportional to 1,081.35, 1,493.64 and 1,019.79

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Solution

The fourth proportional to 1,081.35, 1,493.64 and 1,019.79 is: 1,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.35 : 1,493.64 = 1,019.79 : x
  2. Step 2: Convert to fraction form
    1,081.35/1,493.64 = 1,019.79/x
  3. Step 3: Cross multiply
    1,081.35x = 1,493.64 × 1,019.79
  4. Step 4: Simplify right side
    1,081.35x = 1,523,199.14
  5. Step 5: Solve for x
    x = 1,523,199.14/1,081.35
  6. Step 6: Final answer
    x = 1,408.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.