Home / 2,857.14-4,287.51-1,125.75

Finding the Fourth Proportional to 2,857.14, 4,287.51 and 1,125.75

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Solution

The fourth proportional to 2,857.14, 4,287.51 and 1,125.75 is: 1,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.14 : 4,287.51 = 1,125.75 : x
  2. Step 2: Convert to fraction form
    2,857.14/4,287.51 = 1,125.75/x
  3. Step 3: Cross multiply
    2,857.14x = 4,287.51 × 1,125.75
  4. Step 4: Simplify right side
    2,857.14x = 4,826,664.38
  5. Step 5: Solve for x
    x = 4,826,664.38/2,857.14
  6. Step 6: Final answer
    x = 1,689.33

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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.