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Finding the Fourth Proportional to 6,859.70, 10,287.51 and 2,910.90

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Solution

The fourth proportional to 6,859.70, 10,287.51 and 2,910.90 is: 4,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,859.70 : 10,287.51 = 2,910.90 : x
  2. Step 2: Convert to fraction form
    6,859.70/10,287.51 = 2,910.90/x
  3. Step 3: Cross multiply
    6,859.70x = 10,287.51 × 2,910.90
  4. Step 4: Simplify right side
    6,859.70x = 29,945,940.52
  5. Step 5: Solve for x
    x = 29,945,940.52/6,859.70
  6. Step 6: Final answer
    x = 4,365.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.