Home / 4,118.94-5,685.66-2,790

Finding the Fourth Proportional to 4,118.94, 5,685.66 and 2,790

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Solution

The fourth proportional to 4,118.94, 5,685.66 and 2,790 is: 3,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,118.94 : 5,685.66 = 2,790 : x
  2. Step 2: Convert to fraction form
    4,118.94/5,685.66 = 2,790/x
  3. Step 3: Cross multiply
    4,118.94x = 5,685.66 × 2,790
  4. Step 4: Simplify right side
    4,118.94x = 15,862,991.40
  5. Step 5: Solve for x
    x = 15,862,991.40/4,118.94
  6. Step 6: Final answer
    x = 3,851.23

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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.