Home / 2,076.85-3,117.99-1,387.94

Finding the Fourth Proportional to 2,076.85, 3,117.99 and 1,387.94

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Solution

The fourth proportional to 2,076.85, 3,117.99 and 1,387.94 is: 2,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.85 : 3,117.99 = 1,387.94 : x
  2. Step 2: Convert to fraction form
    2,076.85/3,117.99 = 1,387.94/x
  3. Step 3: Cross multiply
    2,076.85x = 3,117.99 × 1,387.94
  4. Step 4: Simplify right side
    2,076.85x = 4,327,583.04
  5. Step 5: Solve for x
    x = 4,327,583.04/2,076.85
  6. Step 6: Final answer
    x = 2,083.73

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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.