Home / 3,211.38-4,820.91-1,913.46

Finding the Fourth Proportional to 3,211.38, 4,820.91 and 1,913.46

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Solution

The fourth proportional to 3,211.38, 4,820.91 and 1,913.46 is: 2,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.38 : 4,820.91 = 1,913.46 : x
  2. Step 2: Convert to fraction form
    3,211.38/4,820.91 = 1,913.46/x
  3. Step 3: Cross multiply
    3,211.38x = 4,820.91 × 1,913.46
  4. Step 4: Simplify right side
    3,211.38x = 9,224,618.45
  5. Step 5: Solve for x
    x = 9,224,618.45/3,211.38
  6. Step 6: Final answer
    x = 2,872.48

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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.