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Finding the Fourth Proportional to 7,609.58, 11,418.15 and 5,138.98

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Solution

The fourth proportional to 7,609.58, 11,418.15 and 5,138.98 is: 7,711.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,609.58 : 11,418.15 = 5,138.98 : x
  2. Step 2: Convert to fraction form
    7,609.58/11,418.15 = 5,138.98/x
  3. Step 3: Cross multiply
    7,609.58x = 11,418.15 × 5,138.98
  4. Step 4: Simplify right side
    7,609.58x = 58,677,644.49
  5. Step 5: Solve for x
    x = 58,677,644.49/7,609.58
  6. Step 6: Final answer
    x = 7,711.02

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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.