Home / 2,079.55-3,119.33-1,921.60

Finding the Fourth Proportional to 2,079.55, 3,119.33 and 1,921.60

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Solution

The fourth proportional to 2,079.55, 3,119.33 and 1,921.60 is: 2,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.55 : 3,119.33 = 1,921.60 : x
  2. Step 2: Convert to fraction form
    2,079.55/3,119.33 = 1,921.60/x
  3. Step 3: Cross multiply
    2,079.55x = 3,119.33 × 1,921.60
  4. Step 4: Simplify right side
    2,079.55x = 5,994,104.53
  5. Step 5: Solve for x
    x = 5,994,104.53/2,079.55
  6. Step 6: Final answer
    x = 2,882.40

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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.