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Finding the Fourth Proportional to 5,795.78, 7,998.21 and 3,143.21

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Solution

The fourth proportional to 5,795.78, 7,998.21 and 3,143.21 is: 4,337.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,795.78 : 7,998.21 = 3,143.21 : x
  2. Step 2: Convert to fraction form
    5,795.78/7,998.21 = 3,143.21/x
  3. Step 3: Cross multiply
    5,795.78x = 7,998.21 × 3,143.21
  4. Step 4: Simplify right side
    5,795.78x = 25,140,053.65
  5. Step 5: Solve for x
    x = 25,140,053.65/5,795.78
  6. Step 6: Final answer
    x = 4,337.65

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1.5x scale

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.