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Finding the Fourth Proportional to 11,488, 17,232 and 3,280

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Solution

The fourth proportional to 11,488, 17,232 and 3,280 is: 4,920

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,488 : 17,232 = 3,280 : x
  2. Step 2: Convert to fraction form
    11,488/17,232 = 3,280/x
  3. Step 3: Cross multiply
    11,488x = 17,232 × 3,280
  4. Step 4: Simplify right side
    11,488x = 56,520,960
  5. Step 5: Solve for x
    x = 56,520,960/11,488
  6. Step 6: Final answer
    x = 4,920

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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.