Home / 2,076.18-3,110.28-1,380.75

Finding the Fourth Proportional to 2,076.18, 3,110.28 and 1,380.75

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Solution

The fourth proportional to 2,076.18, 3,110.28 and 1,380.75 is: 2,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.18 : 3,110.28 = 1,380.75 : x
  2. Step 2: Convert to fraction form
    2,076.18/3,110.28 = 1,380.75/x
  3. Step 3: Cross multiply
    2,076.18x = 3,110.28 × 1,380.75
  4. Step 4: Simplify right side
    2,076.18x = 4,294,519.11
  5. Step 5: Solve for x
    x = 4,294,519.11/2,076.18
  6. Step 6: Final answer
    x = 2,068.47

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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.