Home / 2,911.40-4,367.10-2,079.80

Finding the Fourth Proportional to 2,911.40, 4,367.10 and 2,079.80

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Solution

The fourth proportional to 2,911.40, 4,367.10 and 2,079.80 is: 3,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.40 : 4,367.10 = 2,079.80 : x
  2. Step 2: Convert to fraction form
    2,911.40/4,367.10 = 2,079.80/x
  3. Step 3: Cross multiply
    2,911.40x = 4,367.10 × 2,079.80
  4. Step 4: Simplify right side
    2,911.40x = 9,082,694.58
  5. Step 5: Solve for x
    x = 9,082,694.58/2,911.40
  6. Step 6: Final answer
    x = 3,119.70

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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.