Home / 5,220.43-7,828.20-3,029.78

Finding the Fourth Proportional to 5,220.43, 7,828.20 and 3,029.78

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Solution

The fourth proportional to 5,220.43, 7,828.20 and 3,029.78 is: 4,543.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.43 : 7,828.20 = 3,029.78 : x
  2. Step 2: Convert to fraction form
    5,220.43/7,828.20 = 3,029.78/x
  3. Step 3: Cross multiply
    5,220.43x = 7,828.20 × 3,029.78
  4. Step 4: Simplify right side
    5,220.43x = 23,717,743.37
  5. Step 5: Solve for x
    x = 23,717,743.37/5,220.43
  6. Step 6: Final answer
    x = 4,543.26

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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.