Home / 6,719.25-10,078.12-1,788.78

Finding the Fourth Proportional to 6,719.25, 10,078.12 and 1,788.78

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Solution

The fourth proportional to 6,719.25, 10,078.12 and 1,788.78 is: 2,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,719.25 : 10,078.12 = 1,788.78 : x
  2. Step 2: Convert to fraction form
    6,719.25/10,078.12 = 1,788.78/x
  3. Step 3: Cross multiply
    6,719.25x = 10,078.12 × 1,788.78
  4. Step 4: Simplify right side
    6,719.25x = 18,027,579.52
  5. Step 5: Solve for x
    x = 18,027,579.52/6,719.25
  6. Step 6: Final answer
    x = 2,682.97

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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.