Home / 2,780.20-4,162.20-2,699.20

Finding the Fourth Proportional to 2,780.20, 4,162.20 and 2,699.20

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Solution

The fourth proportional to 2,780.20, 4,162.20 and 2,699.20 is: 4,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.20 : 4,162.20 = 2,699.20 : x
  2. Step 2: Convert to fraction form
    2,780.20/4,162.20 = 2,699.20/x
  3. Step 3: Cross multiply
    2,780.20x = 4,162.20 × 2,699.20
  4. Step 4: Simplify right side
    2,780.20x = 11,234,610.24
  5. Step 5: Solve for x
    x = 11,234,610.24/2,780.20
  6. Step 6: Final answer
    x = 4,040.94

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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.