Home / 9,319.80-12,861.24-5,287.38

Finding the Fourth Proportional to 9,319.80, 12,861.24 and 5,287.38

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Solution

The fourth proportional to 9,319.80, 12,861.24 and 5,287.38 is: 7,296.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.80 : 12,861.24 = 5,287.38 : x
  2. Step 2: Convert to fraction form
    9,319.80/12,861.24 = 5,287.38/x
  3. Step 3: Cross multiply
    9,319.80x = 12,861.24 × 5,287.38
  4. Step 4: Simplify right side
    9,319.80x = 68,002,195.09
  5. Step 5: Solve for x
    x = 68,002,195.09/9,319.80
  6. Step 6: Final answer
    x = 7,296.53

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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.