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Finding the Fourth Proportional to 7,449.91, 11,174.85 and 1,903.25

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Solution

The fourth proportional to 7,449.91, 11,174.85 and 1,903.25 is: 2,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,449.91 : 11,174.85 = 1,903.25 : x
  2. Step 2: Convert to fraction form
    7,449.91/11,174.85 = 1,903.25/x
  3. Step 3: Cross multiply
    7,449.91x = 11,174.85 × 1,903.25
  4. Step 4: Simplify right side
    7,449.91x = 21,268,523.75
  5. Step 5: Solve for x
    x = 21,268,523.75/7,449.91
  6. Step 6: Final answer
    x = 2,854.87

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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.