Home / 2,779.31-3,835.45-1,731.38

Finding the Fourth Proportional to 2,779.31, 3,835.45 and 1,731.38

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Solution

The fourth proportional to 2,779.31, 3,835.45 and 1,731.38 is: 2,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.31 : 3,835.45 = 1,731.38 : x
  2. Step 2: Convert to fraction form
    2,779.31/3,835.45 = 1,731.38/x
  3. Step 3: Cross multiply
    2,779.31x = 3,835.45 × 1,731.38
  4. Step 4: Simplify right side
    2,779.31x = 6,640,604.41
  5. Step 5: Solve for x
    x = 6,640,604.41/2,779.31
  6. Step 6: Final answer
    x = 2,389.30

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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.