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Finding the Fourth Proportional to 4,976, 7,464 and 1,328

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Solution

The fourth proportional to 4,976, 7,464 and 1,328 is: 1,992

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,976 : 7,464 = 1,328 : x
  2. Step 2: Convert to fraction form
    4,976/7,464 = 1,328/x
  3. Step 3: Cross multiply
    4,976x = 7,464 × 1,328
  4. Step 4: Simplify right side
    4,976x = 9,912,192
  5. Step 5: Solve for x
    x = 9,912,192/4,976
  6. Step 6: Final answer
    x = 1,992

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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.