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Finding the Fourth Proportional to 2,948, 4,422 and 896

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Solution

The fourth proportional to 2,948, 4,422 and 896 is: 1,344

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948 : 4,422 = 896 : x
  2. Step 2: Convert to fraction form
    2,948/4,422 = 896/x
  3. Step 3: Cross multiply
    2,948x = 4,422 × 896
  4. Step 4: Simplify right side
    2,948x = 3,962,112
  5. Step 5: Solve for x
    x = 3,962,112/2,948
  6. Step 6: Final answer
    x = 1,344

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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.