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Finding the Fourth Proportional to 7,691.58, 11,540.08 and 3,798.72

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Solution

The fourth proportional to 7,691.58, 11,540.08 and 3,798.72 is: 5,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.58 : 11,540.08 = 3,798.72 : x
  2. Step 2: Convert to fraction form
    7,691.58/11,540.08 = 3,798.72/x
  3. Step 3: Cross multiply
    7,691.58x = 11,540.08 × 3,798.72
  4. Step 4: Simplify right side
    7,691.58x = 43,837,532.70
  5. Step 5: Solve for x
    x = 43,837,532.70/7,691.58
  6. Step 6: Final answer
    x = 5,699.42

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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.