Home / 2,779.22-3,836.50-1,731.80

Finding the Fourth Proportional to 2,779.22, 3,836.50 and 1,731.80

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Solution

The fourth proportional to 2,779.22, 3,836.50 and 1,731.80 is: 2,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.22 : 3,836.50 = 1,731.80 : x
  2. Step 2: Convert to fraction form
    2,779.22/3,836.50 = 1,731.80/x
  3. Step 3: Cross multiply
    2,779.22x = 3,836.50 × 1,731.80
  4. Step 4: Simplify right side
    2,779.22x = 6,644,027.19
  5. Step 5: Solve for x
    x = 6,644,027.19/2,779.22
  6. Step 6: Final answer
    x = 2,390.61

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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.