Home / 3,847.40-5,309.80-2,356.30

Finding the Fourth Proportional to 3,847.40, 5,309.80 and 2,356.30

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Solution

The fourth proportional to 3,847.40, 5,309.80 and 2,356.30 is: 3,251.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.40 : 5,309.80 = 2,356.30 : x
  2. Step 2: Convert to fraction form
    3,847.40/5,309.80 = 2,356.30/x
  3. Step 3: Cross multiply
    3,847.40x = 5,309.80 × 2,356.30
  4. Step 4: Simplify right side
    3,847.40x = 12,511,481.74
  5. Step 5: Solve for x
    x = 12,511,481.74/3,847.40
  6. Step 6: Final answer
    x = 3,251.93

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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.