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Finding the Fourth Proportional to 7,920.69, 10,930.24 and 4,383.82

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Solution

The fourth proportional to 7,920.69, 10,930.24 and 4,383.82 is: 6,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.69 : 10,930.24 = 4,383.82 : x
  2. Step 2: Convert to fraction form
    7,920.69/10,930.24 = 4,383.82/x
  3. Step 3: Cross multiply
    7,920.69x = 10,930.24 × 4,383.82
  4. Step 4: Simplify right side
    7,920.69x = 47,916,182.80
  5. Step 5: Solve for x
    x = 47,916,182.80/7,920.69
  6. Step 6: Final answer
    x = 6,049.50

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1.5x scale

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.