Home / 5,708.22-7,872.39-3,718.05

Finding the Fourth Proportional to 5,708.22, 7,872.39 and 3,718.05

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Solution

The fourth proportional to 5,708.22, 7,872.39 and 3,718.05 is: 5,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,708.22 : 7,872.39 = 3,718.05 : x
  2. Step 2: Convert to fraction form
    5,708.22/7,872.39 = 3,718.05/x
  3. Step 3: Cross multiply
    5,708.22x = 7,872.39 × 3,718.05
  4. Step 4: Simplify right side
    5,708.22x = 29,269,939.64
  5. Step 5: Solve for x
    x = 29,269,939.64/5,708.22
  6. Step 6: Final answer
    x = 5,127.68

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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.