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Finding the Fourth Proportional to 9,275.56, 12,800.16 and 5,297.65

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Solution

The fourth proportional to 9,275.56, 12,800.16 and 5,297.65 is: 7,310.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.56 : 12,800.16 = 5,297.65 : x
  2. Step 2: Convert to fraction form
    9,275.56/12,800.16 = 5,297.65/x
  3. Step 3: Cross multiply
    9,275.56x = 12,800.16 × 5,297.65
  4. Step 4: Simplify right side
    9,275.56x = 67,810,735.62
  5. Step 5: Solve for x
    x = 67,810,735.62/9,275.56
  6. Step 6: Final answer
    x = 7,310.69

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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.