Home / 2,851.75-3,935.81-1,673.20

Finding the Fourth Proportional to 2,851.75, 3,935.81 and 1,673.20

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Solution

The fourth proportional to 2,851.75, 3,935.81 and 1,673.20 is: 2,309.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.75 : 3,935.81 = 1,673.20 : x
  2. Step 2: Convert to fraction form
    2,851.75/3,935.81 = 1,673.20/x
  3. Step 3: Cross multiply
    2,851.75x = 3,935.81 × 1,673.20
  4. Step 4: Simplify right side
    2,851.75x = 6,585,369.25
  5. Step 5: Solve for x
    x = 6,585,369.25/2,851.75
  6. Step 6: Final answer
    x = 2,309.24

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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.