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Finding the Fourth Proportional to 4,879.54, 6,732.57 and 2,890

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Solution

The fourth proportional to 4,879.54, 6,732.57 and 2,890 is: 3,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.54 : 6,732.57 = 2,890 : x
  2. Step 2: Convert to fraction form
    4,879.54/6,732.57 = 2,890/x
  3. Step 3: Cross multiply
    4,879.54x = 6,732.57 × 2,890
  4. Step 4: Simplify right side
    4,879.54x = 19,457,127.30
  5. Step 5: Solve for x
    x = 19,457,127.30/4,879.54
  6. Step 6: Final answer
    x = 3,987.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.