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Finding the Fourth Proportional to 9,355.07, 12,910.05 and 5,163.32

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Solution

The fourth proportional to 9,355.07, 12,910.05 and 5,163.32 is: 7,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.07 : 12,910.05 = 5,163.32 : x
  2. Step 2: Convert to fraction form
    9,355.07/12,910.05 = 5,163.32/x
  3. Step 3: Cross multiply
    9,355.07x = 12,910.05 × 5,163.32
  4. Step 4: Simplify right side
    9,355.07x = 66,658,654.82
  5. Step 5: Solve for x
    x = 66,658,654.82/9,355.07
  6. Step 6: Final answer
    x = 7,125.41

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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.