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Finding the Fourth Proportional to 9,355.92, 12,910.84 and 5,164.08

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Solution

The fourth proportional to 9,355.92, 12,910.84 and 5,164.08 is: 7,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.92 : 12,910.84 = 5,164.08 : x
  2. Step 2: Convert to fraction form
    9,355.92/12,910.84 = 5,164.08/x
  3. Step 3: Cross multiply
    9,355.92x = 12,910.84 × 5,164.08
  4. Step 4: Simplify right side
    9,355.92x = 66,672,610.63
  5. Step 5: Solve for x
    x = 66,672,610.63/9,355.92
  6. Step 6: Final answer
    x = 7,126.25

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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.