Home / 7,742.25-11,613.51-3,125.25

Finding the Fourth Proportional to 7,742.25, 11,613.51 and 3,125.25

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Solution

The fourth proportional to 7,742.25, 11,613.51 and 3,125.25 is: 4,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.25 : 11,613.51 = 3,125.25 : x
  2. Step 2: Convert to fraction form
    7,742.25/11,613.51 = 3,125.25/x
  3. Step 3: Cross multiply
    7,742.25x = 11,613.51 × 3,125.25
  4. Step 4: Simplify right side
    7,742.25x = 36,295,122.13
  5. Step 5: Solve for x
    x = 36,295,122.13/7,742.25
  6. Step 6: Final answer
    x = 4,687.93

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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.