Home / 1,408.14-2,112.12-575.55

Finding the Fourth Proportional to 1,408.14, 2,112.12 and 575.55

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Solution

The fourth proportional to 1,408.14, 2,112.12 and 575.55 is: 863.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.14 : 2,112.12 = 575.55 : x
  2. Step 2: Convert to fraction form
    1,408.14/2,112.12 = 575.55/x
  3. Step 3: Cross multiply
    1,408.14x = 2,112.12 × 575.55
  4. Step 4: Simplify right side
    1,408.14x = 1,215,630.67
  5. Step 5: Solve for x
    x = 1,215,630.67/1,408.14
  6. Step 6: Final answer
    x = 863.29

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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.