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Finding the Fourth Proportional to 9,355.59, 12,910.71 and 5,163.84

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Solution

The fourth proportional to 9,355.59, 12,910.71 and 5,163.84 is: 7,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.59 : 12,910.71 = 5,163.84 : x
  2. Step 2: Convert to fraction form
    9,355.59/12,910.71 = 5,163.84/x
  3. Step 3: Cross multiply
    9,355.59x = 12,910.71 × 5,163.84
  4. Step 4: Simplify right side
    9,355.59x = 66,668,840.73
  5. Step 5: Solve for x
    x = 66,668,840.73/9,355.59
  6. Step 6: Final answer
    x = 7,126.10

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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.