Home / 3,124.87-4,311.90-2,007.31

Finding the Fourth Proportional to 3,124.87, 4,311.90 and 2,007.31

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Solution

The fourth proportional to 3,124.87, 4,311.90 and 2,007.31 is: 2,769.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.87 : 4,311.90 = 2,007.31 : x
  2. Step 2: Convert to fraction form
    3,124.87/4,311.90 = 2,007.31/x
  3. Step 3: Cross multiply
    3,124.87x = 4,311.90 × 2,007.31
  4. Step 4: Simplify right side
    3,124.87x = 8,655,336.69
  5. Step 5: Solve for x
    x = 8,655,336.69/3,124.87
  6. Step 6: Final answer
    x = 2,769.83

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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.