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Finding the Fourth Proportional to 2,879.04, 4,321.62 and 2,421.84

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Solution

The fourth proportional to 2,879.04, 4,321.62 and 2,421.84 is: 3,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.04 : 4,321.62 = 2,421.84 : x
  2. Step 2: Convert to fraction form
    2,879.04/4,321.62 = 2,421.84/x
  3. Step 3: Cross multiply
    2,879.04x = 4,321.62 × 2,421.84
  4. Step 4: Simplify right side
    2,879.04x = 10,466,272.18
  5. Step 5: Solve for x
    x = 10,466,272.18/2,879.04
  6. Step 6: Final answer
    x = 3,635.33

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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.