Home / 2,143.26-3,210.03-1,275.75

Finding the Fourth Proportional to 2,143.26, 3,210.03 and 1,275.75

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Solution

The fourth proportional to 2,143.26, 3,210.03 and 1,275.75 is: 1,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.26 : 3,210.03 = 1,275.75 : x
  2. Step 2: Convert to fraction form
    2,143.26/3,210.03 = 1,275.75/x
  3. Step 3: Cross multiply
    2,143.26x = 3,210.03 × 1,275.75
  4. Step 4: Simplify right side
    2,143.26x = 4,095,195.77
  5. Step 5: Solve for x
    x = 4,095,195.77/2,143.26
  6. Step 6: Final answer
    x = 1,910.73

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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.