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Finding the Fourth Proportional to 7,906.85, 10,912.13 and 4,370.74

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Solution

The fourth proportional to 7,906.85, 10,912.13 and 4,370.74 is: 6,031.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.85 : 10,912.13 = 4,370.74 : x
  2. Step 2: Convert to fraction form
    7,906.85/10,912.13 = 4,370.74/x
  3. Step 3: Cross multiply
    7,906.85x = 10,912.13 × 4,370.74
  4. Step 4: Simplify right side
    7,906.85x = 47,694,050.33
  5. Step 5: Solve for x
    x = 47,694,050.33/7,906.85
  6. Step 6: Final answer
    x = 6,031.99

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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.