Home / 7,725.20-11,587.80-3,837.20

Finding the Fourth Proportional to 7,725.20, 11,587.80 and 3,837.20

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Solution

The fourth proportional to 7,725.20, 11,587.80 and 3,837.20 is: 5,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.20 : 11,587.80 = 3,837.20 : x
  2. Step 2: Convert to fraction form
    7,725.20/11,587.80 = 3,837.20/x
  3. Step 3: Cross multiply
    7,725.20x = 11,587.80 × 3,837.20
  4. Step 4: Simplify right side
    7,725.20x = 44,464,706.16
  5. Step 5: Solve for x
    x = 44,464,706.16/7,725.20
  6. Step 6: Final answer
    x = 5,755.80

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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.