Home / 2,780.83-3,840.92-2,199.07

Finding the Fourth Proportional to 2,780.83, 3,840.92 and 2,199.07

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Solution

The fourth proportional to 2,780.83, 3,840.92 and 2,199.07 is: 3,037.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.83 : 3,840.92 = 2,199.07 : x
  2. Step 2: Convert to fraction form
    2,780.83/3,840.92 = 2,199.07/x
  3. Step 3: Cross multiply
    2,780.83x = 3,840.92 × 2,199.07
  4. Step 4: Simplify right side
    2,780.83x = 8,446,451.94
  5. Step 5: Solve for x
    x = 8,446,451.94/2,780.83
  6. Step 6: Final answer
    x = 3,037.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.