Home / 2,688.24-4,028.57-2,137.98

Finding the Fourth Proportional to 2,688.24, 4,028.57 and 2,137.98

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Solution

The fourth proportional to 2,688.24, 4,028.57 and 2,137.98 is: 3,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.24 : 4,028.57 = 2,137.98 : x
  2. Step 2: Convert to fraction form
    2,688.24/4,028.57 = 2,137.98/x
  3. Step 3: Cross multiply
    2,688.24x = 4,028.57 × 2,137.98
  4. Step 4: Simplify right side
    2,688.24x = 8,613,002.09
  5. Step 5: Solve for x
    x = 8,613,002.09/2,688.24
  6. Step 6: Final answer
    x = 3,203.96

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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.