Home / 7,143.22-10,721.85-3,863.35

Finding the Fourth Proportional to 7,143.22, 10,721.85 and 3,863.35

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Solution

The fourth proportional to 7,143.22, 10,721.85 and 3,863.35 is: 5,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.22 : 10,721.85 = 3,863.35 : x
  2. Step 2: Convert to fraction form
    7,143.22/10,721.85 = 3,863.35/x
  3. Step 3: Cross multiply
    7,143.22x = 10,721.85 × 3,863.35
  4. Step 4: Simplify right side
    7,143.22x = 41,422,259.20
  5. Step 5: Solve for x
    x = 41,422,259.20/7,143.22
  6. Step 6: Final answer
    x = 5,798.82

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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.