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Finding the Fourth Proportional to 7,709.86, 10,640.01 and 4,353.76

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Solution

The fourth proportional to 7,709.86, 10,640.01 and 4,353.76 is: 6,008.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.86 : 10,640.01 = 4,353.76 : x
  2. Step 2: Convert to fraction form
    7,709.86/10,640.01 = 4,353.76/x
  3. Step 3: Cross multiply
    7,709.86x = 10,640.01 × 4,353.76
  4. Step 4: Simplify right side
    7,709.86x = 46,324,049.94
  5. Step 5: Solve for x
    x = 46,324,049.94/7,709.86
  6. Step 6: Final answer
    x = 6,008.42

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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.