Home / 2,688.37-4,033.49-839.95

Finding the Fourth Proportional to 2,688.37, 4,033.49 and 839.95

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Solution

The fourth proportional to 2,688.37, 4,033.49 and 839.95 is: 1,260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.37 : 4,033.49 = 839.95 : x
  2. Step 2: Convert to fraction form
    2,688.37/4,033.49 = 839.95/x
  3. Step 3: Cross multiply
    2,688.37x = 4,033.49 × 839.95
  4. Step 4: Simplify right side
    2,688.37x = 3,387,929.93
  5. Step 5: Solve for x
    x = 3,387,929.93/2,688.37
  6. Step 6: Final answer
    x = 1,260.22

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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.