Home / 3,710.90-5,120.19-2,218.56

Finding the Fourth Proportional to 3,710.90, 5,120.19 and 2,218.56

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Solution

The fourth proportional to 3,710.90, 5,120.19 and 2,218.56 is: 3,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.90 : 5,120.19 = 2,218.56 : x
  2. Step 2: Convert to fraction form
    3,710.90/5,120.19 = 2,218.56/x
  3. Step 3: Cross multiply
    3,710.90x = 5,120.19 × 2,218.56
  4. Step 4: Simplify right side
    3,710.90x = 11,359,448.73
  5. Step 5: Solve for x
    x = 11,359,448.73/3,710.90
  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.