Home / 3,790.44-5,230.80-2,218.20

Finding the Fourth Proportional to 3,790.44, 5,230.80 and 2,218.20

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Solution

The fourth proportional to 3,790.44, 5,230.80 and 2,218.20 is: 3,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.44 : 5,230.80 = 2,218.20 : x
  2. Step 2: Convert to fraction form
    3,790.44/5,230.80 = 2,218.20/x
  3. Step 3: Cross multiply
    3,790.44x = 5,230.80 × 2,218.20
  4. Step 4: Simplify right side
    3,790.44x = 11,602,960.56
  5. Step 5: Solve for x
    x = 11,602,960.56/3,790.44
  6. Step 6: Final answer
    x = 3,061.11

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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.