Home / 3,778.95-5,215.20-2,286.93

Finding the Fourth Proportional to 3,778.95, 5,215.20 and 2,286.93

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Solution

The fourth proportional to 3,778.95, 5,215.20 and 2,286.93 is: 3,156.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.95 : 5,215.20 = 2,286.93 : x
  2. Step 2: Convert to fraction form
    3,778.95/5,215.20 = 2,286.93/x
  3. Step 3: Cross multiply
    3,778.95x = 5,215.20 × 2,286.93
  4. Step 4: Simplify right side
    3,778.95x = 11,926,797.34
  5. Step 5: Solve for x
    x = 11,926,797.34/3,778.95
  6. Step 6: Final answer
    x = 3,156.11

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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.