Home / 7,920.20-10,929.87-4,383.65

Finding the Fourth Proportional to 7,920.20, 10,929.87 and 4,383.65

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Solution

The fourth proportional to 7,920.20, 10,929.87 and 4,383.65 is: 6,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.20 : 10,929.87 = 4,383.65 : x
  2. Step 2: Convert to fraction form
    7,920.20/10,929.87 = 4,383.65/x
  3. Step 3: Cross multiply
    7,920.20x = 10,929.87 × 4,383.65
  4. Step 4: Simplify right side
    7,920.20x = 47,912,669.98
  5. Step 5: Solve for x
    x = 47,912,669.98/7,920.20
  6. Step 6: Final answer
    x = 6,049.43

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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.