Home / 3,213.89-4,821.41-1,135.10

Finding the Fourth Proportional to 3,213.89, 4,821.41 and 1,135.10

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Solution

The fourth proportional to 3,213.89, 4,821.41 and 1,135.10 is: 1,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.89 : 4,821.41 = 1,135.10 : x
  2. Step 2: Convert to fraction form
    3,213.89/4,821.41 = 1,135.10/x
  3. Step 3: Cross multiply
    3,213.89x = 4,821.41 × 1,135.10
  4. Step 4: Simplify right side
    3,213.89x = 5,472,770.79
  5. Step 5: Solve for x
    x = 5,472,770.79/3,213.89
  6. Step 6: Final answer
    x = 1,702.85

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1.5x scale

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.