Home / 2,688.46-4,033.50-839.77

Finding the Fourth Proportional to 2,688.46, 4,033.50 and 839.77

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Solution

The fourth proportional to 2,688.46, 4,033.50 and 839.77 is: 1,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.46 : 4,033.50 = 839.77 : x
  2. Step 2: Convert to fraction form
    2,688.46/4,033.50 = 839.77/x
  3. Step 3: Cross multiply
    2,688.46x = 4,033.50 × 839.77
  4. Step 4: Simplify right side
    2,688.46x = 3,387,199.06
  5. Step 5: Solve for x
    x = 3,387,199.06/2,688.46
  6. Step 6: Final answer
    x = 1,259.90

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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.