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Finding the Fourth Proportional to 2,961.44, 4,443.03 and 987.32

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Solution

The fourth proportional to 2,961.44, 4,443.03 and 987.32 is: 1,481.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.44 : 4,443.03 = 987.32 : x
  2. Step 2: Convert to fraction form
    2,961.44/4,443.03 = 987.32/x
  3. Step 3: Cross multiply
    2,961.44x = 4,443.03 × 987.32
  4. Step 4: Simplify right side
    2,961.44x = 4,386,670.16
  5. Step 5: Solve for x
    x = 4,386,670.16/2,961.44
  6. Step 6: Final answer
    x = 1,481.27

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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.