Home / 2,847.38-3,927.59-1,961.66

Finding the Fourth Proportional to 2,847.38, 3,927.59 and 1,961.66

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Solution

The fourth proportional to 2,847.38, 3,927.59 and 1,961.66 is: 2,705.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.38 : 3,927.59 = 1,961.66 : x
  2. Step 2: Convert to fraction form
    2,847.38/3,927.59 = 1,961.66/x
  3. Step 3: Cross multiply
    2,847.38x = 3,927.59 × 1,961.66
  4. Step 4: Simplify right side
    2,847.38x = 7,704,596.20
  5. Step 5: Solve for x
    x = 7,704,596.20/2,847.38
  6. Step 6: Final answer
    x = 2,705.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.