Home / 2,688.68-4,027.77-1,761.43

Finding the Fourth Proportional to 2,688.68, 4,027.77 and 1,761.43

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Solution

The fourth proportional to 2,688.68, 4,027.77 and 1,761.43 is: 2,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.68 : 4,027.77 = 1,761.43 : x
  2. Step 2: Convert to fraction form
    2,688.68/4,027.77 = 1,761.43/x
  3. Step 3: Cross multiply
    2,688.68x = 4,027.77 × 1,761.43
  4. Step 4: Simplify right side
    2,688.68x = 7,094,614.77
  5. Step 5: Solve for x
    x = 7,094,614.77/2,688.68
  6. Step 6: Final answer
    x = 2,638.70

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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.