Home / 2,719.88-4,078.30-1,855.24

Finding the Fourth Proportional to 2,719.88, 4,078.30 and 1,855.24

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Solution

The fourth proportional to 2,719.88, 4,078.30 and 1,855.24 is: 2,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.88 : 4,078.30 = 1,855.24 : x
  2. Step 2: Convert to fraction form
    2,719.88/4,078.30 = 1,855.24/x
  3. Step 3: Cross multiply
    2,719.88x = 4,078.30 × 1,855.24
  4. Step 4: Simplify right side
    2,719.88x = 7,566,225.29
  5. Step 5: Solve for x
    x = 7,566,225.29/2,719.88
  6. Step 6: Final answer
    x = 2,781.82

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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.