Home / 2,688.23-4,029.26-1,127.94

Finding the Fourth Proportional to 2,688.23, 4,029.26 and 1,127.94

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Solution

The fourth proportional to 2,688.23, 4,029.26 and 1,127.94 is: 1,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.23 : 4,029.26 = 1,127.94 : x
  2. Step 2: Convert to fraction form
    2,688.23/4,029.26 = 1,127.94/x
  3. Step 3: Cross multiply
    2,688.23x = 4,029.26 × 1,127.94
  4. Step 4: Simplify right side
    2,688.23x = 4,544,757.88
  5. Step 5: Solve for x
    x = 4,544,757.88/2,688.23
  6. Step 6: Final answer
    x = 1,690.62

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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.