Home / 2,672.87-4,005.85-1,283.31

Finding the Fourth Proportional to 2,672.87, 4,005.85 and 1,283.31

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Solution

The fourth proportional to 2,672.87, 4,005.85 and 1,283.31 is: 1,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.87 : 4,005.85 = 1,283.31 : x
  2. Step 2: Convert to fraction form
    2,672.87/4,005.85 = 1,283.31/x
  3. Step 3: Cross multiply
    2,672.87x = 4,005.85 × 1,283.31
  4. Step 4: Simplify right side
    2,672.87x = 5,140,747.36
  5. Step 5: Solve for x
    x = 5,140,747.36/2,672.87
  6. Step 6: Final answer
    x = 1,923.31

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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.