Home / 2,103.03-3,147.93-1,278.66

Finding the Fourth Proportional to 2,103.03, 3,147.93 and 1,278.66

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Solution

The fourth proportional to 2,103.03, 3,147.93 and 1,278.66 is: 1,913.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.03 : 3,147.93 = 1,278.66 : x
  2. Step 2: Convert to fraction form
    2,103.03/3,147.93 = 1,278.66/x
  3. Step 3: Cross multiply
    2,103.03x = 3,147.93 × 1,278.66
  4. Step 4: Simplify right side
    2,103.03x = 4,025,132.17
  5. Step 5: Solve for x
    x = 4,025,132.17/2,103.03
  6. Step 6: Final answer
    x = 1,913.97

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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.