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Finding the Fourth Proportional to 7,610.58, 11,416.79 and 2,679.21

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Solution

The fourth proportional to 7,610.58, 11,416.79 and 2,679.21 is: 4,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,610.58 : 11,416.79 = 2,679.21 : x
  2. Step 2: Convert to fraction form
    7,610.58/11,416.79 = 2,679.21/x
  3. Step 3: Cross multiply
    7,610.58x = 11,416.79 × 2,679.21
  4. Step 4: Simplify right side
    7,610.58x = 30,587,984.63
  5. Step 5: Solve for x
    x = 30,587,984.63/7,610.58
  6. Step 6: Final answer
    x = 4,019.14

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1.5x scale

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.