Home / 2,519.19-3,779.55-787.83

Finding the Fourth Proportional to 2,519.19, 3,779.55 and 787.83

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Solution

The fourth proportional to 2,519.19, 3,779.55 and 787.83 is: 1,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.19 : 3,779.55 = 787.83 : x
  2. Step 2: Convert to fraction form
    2,519.19/3,779.55 = 787.83/x
  3. Step 3: Cross multiply
    2,519.19x = 3,779.55 × 787.83
  4. Step 4: Simplify right side
    2,519.19x = 2,977,642.88
  5. Step 5: Solve for x
    x = 2,977,642.88/2,519.19
  6. Step 6: Final answer
    x = 1,181.98

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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.