Home / 5,108.48-7,663.46-1,821.28

Finding the Fourth Proportional to 5,108.48, 7,663.46 and 1,821.28

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Solution

The fourth proportional to 5,108.48, 7,663.46 and 1,821.28 is: 2,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.48 : 7,663.46 = 1,821.28 : x
  2. Step 2: Convert to fraction form
    5,108.48/7,663.46 = 1,821.28/x
  3. Step 3: Cross multiply
    5,108.48x = 7,663.46 × 1,821.28
  4. Step 4: Simplify right side
    5,108.48x = 13,957,306.43
  5. Step 5: Solve for x
    x = 13,957,306.43/5,108.48
  6. Step 6: Final answer
    x = 2,732.18

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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.