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Finding the Fourth Proportional to 9,163.53, 12,613.72 and 7,908.57

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Solution

The fourth proportional to 9,163.53, 12,613.72 and 7,908.57 is: 10,886.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.53 : 12,613.72 = 7,908.57 : x
  2. Step 2: Convert to fraction form
    9,163.53/12,613.72 = 7,908.57/x
  3. Step 3: Cross multiply
    9,163.53x = 12,613.72 × 7,908.57
  4. Step 4: Simplify right side
    9,163.53x = 99,756,467.81
  5. Step 5: Solve for x
    x = 99,756,467.81/9,163.53
  6. Step 6: Final answer
    x = 10,886.25

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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.