Home / 9,318.92-12,861.60-5,491.18

Finding the Fourth Proportional to 9,318.92, 12,861.60 and 5,491.18

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Solution

The fourth proportional to 9,318.92, 12,861.60 and 5,491.18 is: 7,578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.92 : 12,861.60 = 5,491.18 : x
  2. Step 2: Convert to fraction form
    9,318.92/12,861.60 = 5,491.18/x
  3. Step 3: Cross multiply
    9,318.92x = 12,861.60 × 5,491.18
  4. Step 4: Simplify right side
    9,318.92x = 70,625,360.69
  5. Step 5: Solve for x
    x = 70,625,360.69/9,318.92
  6. Step 6: Final answer
    x = 7,578.71

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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.