Home / 2,688.68-4,027.92-1,297.88

Finding the Fourth Proportional to 2,688.68, 4,027.92 and 1,297.88

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Solution

The fourth proportional to 2,688.68, 4,027.92 and 1,297.88 is: 1,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.68 : 4,027.92 = 1,297.88 : x
  2. Step 2: Convert to fraction form
    2,688.68/4,027.92 = 1,297.88/x
  3. Step 3: Cross multiply
    2,688.68x = 4,027.92 × 1,297.88
  4. Step 4: Simplify right side
    2,688.68x = 5,227,756.81
  5. Step 5: Solve for x
    x = 5,227,756.81/2,688.68
  6. Step 6: Final answer
    x = 1,944.36

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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.