Home / 3,128.49-4,687.88-1,179.63

Finding the Fourth Proportional to 3,128.49, 4,687.88 and 1,179.63

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Solution

The fourth proportional to 3,128.49, 4,687.88 and 1,179.63 is: 1,767.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.49 : 4,687.88 = 1,179.63 : x
  2. Step 2: Convert to fraction form
    3,128.49/4,687.88 = 1,179.63/x
  3. Step 3: Cross multiply
    3,128.49x = 4,687.88 × 1,179.63
  4. Step 4: Simplify right side
    3,128.49x = 5,529,957.99
  5. Step 5: Solve for x
    x = 5,529,957.99/3,128.49
  6. Step 6: Final answer
    x = 1,767.61

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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.