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Finding the Fourth Proportional to 7,491.86, 11,239.77 and 2,561.48

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Solution

The fourth proportional to 7,491.86, 11,239.77 and 2,561.48 is: 3,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.86 : 11,239.77 = 2,561.48 : x
  2. Step 2: Convert to fraction form
    7,491.86/11,239.77 = 2,561.48/x
  3. Step 3: Cross multiply
    7,491.86x = 11,239.77 × 2,561.48
  4. Step 4: Simplify right side
    7,491.86x = 28,790,446.06
  5. Step 5: Solve for x
    x = 28,790,446.06/7,491.86
  6. Step 6: Final answer
    x = 3,842.90

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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.