Home / 7,123.09-9,829.83-3,936.61

Finding the Fourth Proportional to 7,123.09, 9,829.83 and 3,936.61

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Solution

The fourth proportional to 7,123.09, 9,829.83 and 3,936.61 is: 5,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.09 : 9,829.83 = 3,936.61 : x
  2. Step 2: Convert to fraction form
    7,123.09/9,829.83 = 3,936.61/x
  3. Step 3: Cross multiply
    7,123.09x = 9,829.83 × 3,936.61
  4. Step 4: Simplify right side
    7,123.09x = 38,696,207.08
  5. Step 5: Solve for x
    x = 38,696,207.08/7,123.09
  6. Step 6: Final answer
    x = 5,432.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.