Home / 2,491.87-3,437.49-2,020.30

Finding the Fourth Proportional to 2,491.87, 3,437.49 and 2,020.30

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Solution

The fourth proportional to 2,491.87, 3,437.49 and 2,020.30 is: 2,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.87 : 3,437.49 = 2,020.30 : x
  2. Step 2: Convert to fraction form
    2,491.87/3,437.49 = 2,020.30/x
  3. Step 3: Cross multiply
    2,491.87x = 3,437.49 × 2,020.30
  4. Step 4: Simplify right side
    2,491.87x = 6,944,761.05
  5. Step 5: Solve for x
    x = 6,944,761.05/2,491.87
  6. Step 6: Final answer
    x = 2,786.97

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1.5x scale

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.