Home / 5,213.43-7,820.42-1,317.87

Finding the Fourth Proportional to 5,213.43, 7,820.42 and 1,317.87

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Solution

The fourth proportional to 5,213.43, 7,820.42 and 1,317.87 is: 1,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.43 : 7,820.42 = 1,317.87 : x
  2. Step 2: Convert to fraction form
    5,213.43/7,820.42 = 1,317.87/x
  3. Step 3: Cross multiply
    5,213.43x = 7,820.42 × 1,317.87
  4. Step 4: Simplify right side
    5,213.43x = 10,306,290.32
  5. Step 5: Solve for x
    x = 10,306,290.32/5,213.43
  6. Step 6: Final answer
    x = 1,976.87

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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.