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Finding the Fourth Proportional to 7,447.86, 11,174.22 and 3,551.76

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Solution

The fourth proportional to 7,447.86, 11,174.22 and 3,551.76 is: 5,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.86 : 11,174.22 = 3,551.76 : x
  2. Step 2: Convert to fraction form
    7,447.86/11,174.22 = 3,551.76/x
  3. Step 3: Cross multiply
    7,447.86x = 11,174.22 × 3,551.76
  4. Step 4: Simplify right side
    7,447.86x = 39,688,147.63
  5. Step 5: Solve for x
    x = 39,688,147.63/7,447.86
  6. Step 6: Final answer
    x = 5,328.80

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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.