Home / 5,689.79-7,851.94-3,172.06

Finding the Fourth Proportional to 5,689.79, 7,851.94 and 3,172.06

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Solution

The fourth proportional to 5,689.79, 7,851.94 and 3,172.06 is: 4,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.79 : 7,851.94 = 3,172.06 : x
  2. Step 2: Convert to fraction form
    5,689.79/7,851.94 = 3,172.06/x
  3. Step 3: Cross multiply
    5,689.79x = 7,851.94 × 3,172.06
  4. Step 4: Simplify right side
    5,689.79x = 24,906,824.80
  5. Step 5: Solve for x
    x = 24,906,824.80/5,689.79
  6. Step 6: Final answer
    x = 4,377.46

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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.