Home / 1,408.38-2,111.75-483.56

Finding the Fourth Proportional to 1,408.38, 2,111.75 and 483.56

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Solution

The fourth proportional to 1,408.38, 2,111.75 and 483.56 is: 725.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.38 : 2,111.75 = 483.56 : x
  2. Step 2: Convert to fraction form
    1,408.38/2,111.75 = 483.56/x
  3. Step 3: Cross multiply
    1,408.38x = 2,111.75 × 483.56
  4. Step 4: Simplify right side
    1,408.38x = 1,021,157.83
  5. Step 5: Solve for x
    x = 1,021,157.83/1,408.38
  6. Step 6: Final answer
    x = 725.06

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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.