Home / 2,679.90-4,017.66-1,121.05

Finding the Fourth Proportional to 2,679.90, 4,017.66 and 1,121.05

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Solution

The fourth proportional to 2,679.90, 4,017.66 and 1,121.05 is: 1,680.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.90 : 4,017.66 = 1,121.05 : x
  2. Step 2: Convert to fraction form
    2,679.90/4,017.66 = 1,121.05/x
  3. Step 3: Cross multiply
    2,679.90x = 4,017.66 × 1,121.05
  4. Step 4: Simplify right side
    2,679.90x = 4,503,997.74
  5. Step 5: Solve for x
    x = 4,503,997.74/2,679.90
  6. Step 6: Final answer
    x = 1,680.66

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1.5x scale

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.