Home / 3,427.44-5,118.24-2,688.72

Finding the Fourth Proportional to 3,427.44, 5,118.24 and 2,688.72

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Solution

The fourth proportional to 3,427.44, 5,118.24 and 2,688.72 is: 4,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.44 : 5,118.24 = 2,688.72 : x
  2. Step 2: Convert to fraction form
    3,427.44/5,118.24 = 2,688.72/x
  3. Step 3: Cross multiply
    3,427.44x = 5,118.24 × 2,688.72
  4. Step 4: Simplify right side
    3,427.44x = 13,761,514.25
  5. Step 5: Solve for x
    x = 13,761,514.25/3,427.44
  6. Step 6: Final answer
    x = 4,015.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.