Home / 3,896.09-5,377.70-2,218.40

Finding the Fourth Proportional to 3,896.09, 5,377.70 and 2,218.40

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Solution

The fourth proportional to 3,896.09, 5,377.70 and 2,218.40 is: 3,062.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.09 : 5,377.70 = 2,218.40 : x
  2. Step 2: Convert to fraction form
    3,896.09/5,377.70 = 2,218.40/x
  3. Step 3: Cross multiply
    3,896.09x = 5,377.70 × 2,218.40
  4. Step 4: Simplify right side
    3,896.09x = 11,929,851.70
  5. Step 5: Solve for x
    x = 11,929,851.70/3,896.09
  6. Step 6: Final answer
    x = 3,062.01

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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.