Home / 3,710.66-5,120.79-2,218.29

Finding the Fourth Proportional to 3,710.66, 5,120.79 and 2,218.29

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Solution

The fourth proportional to 3,710.66, 5,120.79 and 2,218.29 is: 3,061.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.66 : 5,120.79 = 2,218.29 : x
  2. Step 2: Convert to fraction form
    3,710.66/5,120.79 = 2,218.29/x
  3. Step 3: Cross multiply
    3,710.66x = 5,120.79 × 2,218.29
  4. Step 4: Simplify right side
    3,710.66x = 11,359,397.25
  5. Step 5: Solve for x
    x = 11,359,397.25/3,710.66
  6. Step 6: Final answer
    x = 3,061.29

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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.