Home / 3,311.25-4,963.79-1,118.45

Finding the Fourth Proportional to 3,311.25, 4,963.79 and 1,118.45

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Solution

The fourth proportional to 3,311.25, 4,963.79 and 1,118.45 is: 1,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.25 : 4,963.79 = 1,118.45 : x
  2. Step 2: Convert to fraction form
    3,311.25/4,963.79 = 1,118.45/x
  3. Step 3: Cross multiply
    3,311.25x = 4,963.79 × 1,118.45
  4. Step 4: Simplify right side
    3,311.25x = 5,551,753.74
  5. Step 5: Solve for x
    x = 5,551,753.74/3,311.25
  6. Step 6: Final answer
    x = 1,676.63

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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.