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Finding the Fourth Proportional to 9,186.71, 13,788.07 and 5,245.86

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Solution

The fourth proportional to 9,186.71, 13,788.07 and 5,245.86 is: 7,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.71 : 13,788.07 = 5,245.86 : x
  2. Step 2: Convert to fraction form
    9,186.71/13,788.07 = 5,245.86/x
  3. Step 3: Cross multiply
    9,186.71x = 13,788.07 × 5,245.86
  4. Step 4: Simplify right side
    9,186.71x = 72,330,258.66
  5. Step 5: Solve for x
    x = 72,330,258.66/9,186.71
  6. Step 6: Final answer
    x = 7,873.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.