Home / 3,851.41-5,315.02-2,172.49

Finding the Fourth Proportional to 3,851.41, 5,315.02 and 2,172.49

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Solution

The fourth proportional to 3,851.41, 5,315.02 and 2,172.49 is: 2,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.41 : 5,315.02 = 2,172.49 : x
  2. Step 2: Convert to fraction form
    3,851.41/5,315.02 = 2,172.49/x
  3. Step 3: Cross multiply
    3,851.41x = 5,315.02 × 2,172.49
  4. Step 4: Simplify right side
    3,851.41x = 11,546,827.80
  5. Step 5: Solve for x
    x = 11,546,827.80/3,851.41
  6. Step 6: Final answer
    x = 2,998.08

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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.