Home / 3,102.18-4,285.36-2,821.92

Finding the Fourth Proportional to 3,102.18, 4,285.36 and 2,821.92

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Solution

The fourth proportional to 3,102.18, 4,285.36 and 2,821.92 is: 3,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.18 : 4,285.36 = 2,821.92 : x
  2. Step 2: Convert to fraction form
    3,102.18/4,285.36 = 2,821.92/x
  3. Step 3: Cross multiply
    3,102.18x = 4,285.36 × 2,821.92
  4. Step 4: Simplify right side
    3,102.18x = 12,092,950.15
  5. Step 5: Solve for x
    x = 12,092,950.15/3,102.18
  6. Step 6: Final answer
    x = 3,898.21

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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.