Home / 7,830.89-11,742.08-3,609.57

Finding the Fourth Proportional to 7,830.89, 11,742.08 and 3,609.57

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Solution

The fourth proportional to 7,830.89, 11,742.08 and 3,609.57 is: 5,412.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.89 : 11,742.08 = 3,609.57 : x
  2. Step 2: Convert to fraction form
    7,830.89/11,742.08 = 3,609.57/x
  3. Step 3: Cross multiply
    7,830.89x = 11,742.08 × 3,609.57
  4. Step 4: Simplify right side
    7,830.89x = 42,383,841.66
  5. Step 5: Solve for x
    x = 42,383,841.66/7,830.89
  6. Step 6: Final answer
    x = 5,412.39

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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.