Home / 3,855.74-5,318.96-2,261.34

Finding the Fourth Proportional to 3,855.74, 5,318.96 and 2,261.34

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Solution

The fourth proportional to 3,855.74, 5,318.96 and 2,261.34 is: 3,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.74 : 5,318.96 = 2,261.34 : x
  2. Step 2: Convert to fraction form
    3,855.74/5,318.96 = 2,261.34/x
  3. Step 3: Cross multiply
    3,855.74x = 5,318.96 × 2,261.34
  4. Step 4: Simplify right side
    3,855.74x = 12,027,965.70
  5. Step 5: Solve for x
    x = 12,027,965.70/3,855.74
  6. Step 6: Final answer
    x = 3,119.50

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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.