Home / 2,278.43-3,143.86-1,269.98

Finding the Fourth Proportional to 2,278.43, 3,143.86 and 1,269.98

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Solution

The fourth proportional to 2,278.43, 3,143.86 and 1,269.98 is: 1,752.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.43 : 3,143.86 = 1,269.98 : x
  2. Step 2: Convert to fraction form
    2,278.43/3,143.86 = 1,269.98/x
  3. Step 3: Cross multiply
    2,278.43x = 3,143.86 × 1,269.98
  4. Step 4: Simplify right side
    2,278.43x = 3,992,639.36
  5. Step 5: Solve for x
    x = 3,992,639.36/2,278.43
  6. Step 6: Final answer
    x = 1,752.37

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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.