Home / 2,511.80-3,767.70-1,359.80

Finding the Fourth Proportional to 2,511.80, 3,767.70 and 1,359.80

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Solution

The fourth proportional to 2,511.80, 3,767.70 and 1,359.80 is: 2,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.80 : 3,767.70 = 1,359.80 : x
  2. Step 2: Convert to fraction form
    2,511.80/3,767.70 = 1,359.80/x
  3. Step 3: Cross multiply
    2,511.80x = 3,767.70 × 1,359.80
  4. Step 4: Simplify right side
    2,511.80x = 5,123,318.46
  5. Step 5: Solve for x
    x = 5,123,318.46/2,511.80
  6. Step 6: Final answer
    x = 2,039.70

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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.