Home / 7,742.48-11,610.12-3,122

Finding the Fourth Proportional to 7,742.48, 11,610.12 and 3,122

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Solution

The fourth proportional to 7,742.48, 11,610.12 and 3,122 is: 4,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.48 : 11,610.12 = 3,122 : x
  2. Step 2: Convert to fraction form
    7,742.48/11,610.12 = 3,122/x
  3. Step 3: Cross multiply
    7,742.48x = 11,610.12 × 3,122
  4. Step 4: Simplify right side
    7,742.48x = 36,246,794.64
  5. Step 5: Solve for x
    x = 36,246,794.64/7,742.48
  6. Step 6: Final answer
    x = 4,681.55

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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.