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Finding the Fourth Proportional to 7,751.91, 11,634.59 and 4,245.11

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Solution

The fourth proportional to 7,751.91, 11,634.59 and 4,245.11 is: 6,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.91 : 11,634.59 = 4,245.11 : x
  2. Step 2: Convert to fraction form
    7,751.91/11,634.59 = 4,245.11/x
  3. Step 3: Cross multiply
    7,751.91x = 11,634.59 × 4,245.11
  4. Step 4: Simplify right side
    7,751.91x = 49,390,066.79
  5. Step 5: Solve for x
    x = 49,390,066.79/7,751.91
  6. Step 6: Final answer
    x = 6,371.34

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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.