Home / 2,719.72-4,078.08-1,257.56

Finding the Fourth Proportional to 2,719.72, 4,078.08 and 1,257.56

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Solution

The fourth proportional to 2,719.72, 4,078.08 and 1,257.56 is: 1,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.72 : 4,078.08 = 1,257.56 : x
  2. Step 2: Convert to fraction form
    2,719.72/4,078.08 = 1,257.56/x
  3. Step 3: Cross multiply
    2,719.72x = 4,078.08 × 1,257.56
  4. Step 4: Simplify right side
    2,719.72x = 5,128,430.28
  5. Step 5: Solve for x
    x = 5,128,430.28/2,719.72
  6. Step 6: Final answer
    x = 1,885.65

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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.