Home / 2,717.48-4,078.92-1,256.96

Finding the Fourth Proportional to 2,717.48, 4,078.92 and 1,256.96

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Solution

The fourth proportional to 2,717.48, 4,078.92 and 1,256.96 is: 1,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.48 : 4,078.92 = 1,256.96 : x
  2. Step 2: Convert to fraction form
    2,717.48/4,078.92 = 1,256.96/x
  3. Step 3: Cross multiply
    2,717.48x = 4,078.92 × 1,256.96
  4. Step 4: Simplify right side
    2,717.48x = 5,127,039.28
  5. Step 5: Solve for x
    x = 5,127,039.28/2,717.48
  6. Step 6: Final answer
    x = 1,886.69

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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.