Home / 3,128.11-4,691.94-1,047.93

Finding the Fourth Proportional to 3,128.11, 4,691.94 and 1,047.93

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Solution

The fourth proportional to 3,128.11, 4,691.94 and 1,047.93 is: 1,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.11 : 4,691.94 = 1,047.93 : x
  2. Step 2: Convert to fraction form
    3,128.11/4,691.94 = 1,047.93/x
  3. Step 3: Cross multiply
    3,128.11x = 4,691.94 × 1,047.93
  4. Step 4: Simplify right side
    3,128.11x = 4,916,824.68
  5. Step 5: Solve for x
    x = 4,916,824.68/3,128.11
  6. Step 6: Final answer
    x = 1,571.82

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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.