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Finding the Fourth Proportional to 9,646.64, 14,469.92 and 2,721.12

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Solution

The fourth proportional to 9,646.64, 14,469.92 and 2,721.12 is: 4,081.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,646.64 : 14,469.92 = 2,721.12 : x
  2. Step 2: Convert to fraction form
    9,646.64/14,469.92 = 2,721.12/x
  3. Step 3: Cross multiply
    9,646.64x = 14,469.92 × 2,721.12
  4. Step 4: Simplify right side
    9,646.64x = 39,374,388.71
  5. Step 5: Solve for x
    x = 39,374,388.71/9,646.64
  6. Step 6: Final answer
    x = 4,081.67

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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.