Home / 2,681.10-4,015.17-1,812.78

Finding the Fourth Proportional to 2,681.10, 4,015.17 and 1,812.78

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Solution

The fourth proportional to 2,681.10, 4,015.17 and 1,812.78 is: 2,714.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.10 : 4,015.17 = 1,812.78 : x
  2. Step 2: Convert to fraction form
    2,681.10/4,015.17 = 1,812.78/x
  3. Step 3: Cross multiply
    2,681.10x = 4,015.17 × 1,812.78
  4. Step 4: Simplify right side
    2,681.10x = 7,278,619.87
  5. Step 5: Solve for x
    x = 7,278,619.87/2,681.10
  6. Step 6: Final answer
    x = 2,714.79

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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.