Home / 6,657.21-9,190.17-5,161.68

Finding the Fourth Proportional to 6,657.21, 9,190.17 and 5,161.68

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Solution

The fourth proportional to 6,657.21, 9,190.17 and 5,161.68 is: 7,125.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,657.21 : 9,190.17 = 5,161.68 : x
  2. Step 2: Convert to fraction form
    6,657.21/9,190.17 = 5,161.68/x
  3. Step 3: Cross multiply
    6,657.21x = 9,190.17 × 5,161.68
  4. Step 4: Simplify right side
    6,657.21x = 47,436,716.69
  5. Step 5: Solve for x
    x = 47,436,716.69/6,657.21
  6. Step 6: Final answer
    x = 7,125.62

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Double scale
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Similar ratio
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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.