Home / 3,118.38-4,672.71-1,961.70

Finding the Fourth Proportional to 3,118.38, 4,672.71 and 1,961.70

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Solution

The fourth proportional to 3,118.38, 4,672.71 and 1,961.70 is: 2,939.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.38 : 4,672.71 = 1,961.70 : x
  2. Step 2: Convert to fraction form
    3,118.38/4,672.71 = 1,961.70/x
  3. Step 3: Cross multiply
    3,118.38x = 4,672.71 × 1,961.70
  4. Step 4: Simplify right side
    3,118.38x = 9,166,455.21
  5. Step 5: Solve for x
    x = 9,166,455.21/3,118.38
  6. Step 6: Final answer
    x = 2,939.49

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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.