Home / 2,761.23-3,809.87-2,015.59

Finding the Fourth Proportional to 2,761.23, 3,809.87 and 2,015.59

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Solution

The fourth proportional to 2,761.23, 3,809.87 and 2,015.59 is: 2,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.23 : 3,809.87 = 2,015.59 : x
  2. Step 2: Convert to fraction form
    2,761.23/3,809.87 = 2,015.59/x
  3. Step 3: Cross multiply
    2,761.23x = 3,809.87 × 2,015.59
  4. Step 4: Simplify right side
    2,761.23x = 7,679,125.80
  5. Step 5: Solve for x
    x = 7,679,125.80/2,761.23
  6. Step 6: Final answer
    x = 2,781.06

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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.