Home / 3,391.74-5,080.30-2,800.12

Finding the Fourth Proportional to 3,391.74, 5,080.30 and 2,800.12

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Solution

The fourth proportional to 3,391.74, 5,080.30 and 2,800.12 is: 4,194.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.74 : 5,080.30 = 2,800.12 : x
  2. Step 2: Convert to fraction form
    3,391.74/5,080.30 = 2,800.12/x
  3. Step 3: Cross multiply
    3,391.74x = 5,080.30 × 2,800.12
  4. Step 4: Simplify right side
    3,391.74x = 14,225,449.64
  5. Step 5: Solve for x
    x = 14,225,449.64/3,391.74
  6. Step 6: Final answer
    x = 4,194.15

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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.