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Finding the Fourth Proportional to 8,811.32, 13,212.34 and 4,653.56

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Solution

The fourth proportional to 8,811.32, 13,212.34 and 4,653.56 is: 6,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.32 : 13,212.34 = 4,653.56 : x
  2. Step 2: Convert to fraction form
    8,811.32/13,212.34 = 4,653.56/x
  3. Step 3: Cross multiply
    8,811.32x = 13,212.34 × 4,653.56
  4. Step 4: Simplify right side
    8,811.32x = 61,484,416.93
  5. Step 5: Solve for x
    x = 61,484,416.93/8,811.32
  6. Step 6: Final answer
    x = 6,977.89

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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.