Home / 2,851.26-4,275.81-1,389.66

Finding the Fourth Proportional to 2,851.26, 4,275.81 and 1,389.66

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Solution

The fourth proportional to 2,851.26, 4,275.81 and 1,389.66 is: 2,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.26 : 4,275.81 = 1,389.66 : x
  2. Step 2: Convert to fraction form
    2,851.26/4,275.81 = 1,389.66/x
  3. Step 3: Cross multiply
    2,851.26x = 4,275.81 × 1,389.66
  4. Step 4: Simplify right side
    2,851.26x = 5,941,922.12
  5. Step 5: Solve for x
    x = 5,941,922.12/2,851.26
  6. Step 6: Final answer
    x = 2,083.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.