Home / 5,108.90-7,663.12-1,821.94

Finding the Fourth Proportional to 5,108.90, 7,663.12 and 1,821.94

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Solution

The fourth proportional to 5,108.90, 7,663.12 and 1,821.94 is: 2,732.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.90 : 7,663.12 = 1,821.94 : x
  2. Step 2: Convert to fraction form
    5,108.90/7,663.12 = 1,821.94/x
  3. Step 3: Cross multiply
    5,108.90x = 7,663.12 × 1,821.94
  4. Step 4: Simplify right side
    5,108.90x = 13,961,721.14
  5. Step 5: Solve for x
    x = 13,961,721.14/5,108.90
  6. Step 6: Final answer
    x = 2,732.83

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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.