Home / 1,475.03-2,212.61-487.85

Finding the Fourth Proportional to 1,475.03, 2,212.61 and 487.85

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Solution

The fourth proportional to 1,475.03, 2,212.61 and 487.85 is: 731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.03 : 2,212.61 = 487.85 : x
  2. Step 2: Convert to fraction form
    1,475.03/2,212.61 = 487.85/x
  3. Step 3: Cross multiply
    1,475.03x = 2,212.61 × 487.85
  4. Step 4: Simplify right side
    1,475.03x = 1,079,408.29
  5. Step 5: Solve for x
    x = 1,079,408.29/1,475.03
  6. Step 6: Final answer
    x = 731.79

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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.