Home / 2,761.35-3,810.04-2,015.72

Finding the Fourth Proportional to 2,761.35, 3,810.04 and 2,015.72

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Solution

The fourth proportional to 2,761.35, 3,810.04 and 2,015.72 is: 2,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.35 : 3,810.04 = 2,015.72 : x
  2. Step 2: Convert to fraction form
    2,761.35/3,810.04 = 2,015.72/x
  3. Step 3: Cross multiply
    2,761.35x = 3,810.04 × 2,015.72
  4. Step 4: Simplify right side
    2,761.35x = 7,679,949.74
  5. Step 5: Solve for x
    x = 7,679,949.74/2,761.35
  6. Step 6: Final answer
    x = 2,781.23

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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.