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Finding the Fourth Proportional to 7,465.40, 11,181.90 and 6,169.40

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Solution

The fourth proportional to 7,465.40, 11,181.90 and 6,169.40 is: 9,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,465.40 : 11,181.90 = 6,169.40 : x
  2. Step 2: Convert to fraction form
    7,465.40/11,181.90 = 6,169.40/x
  3. Step 3: Cross multiply
    7,465.40x = 11,181.90 × 6,169.40
  4. Step 4: Simplify right side
    7,465.40x = 68,985,613.86
  5. Step 5: Solve for x
    x = 68,985,613.86/7,465.40
  6. Step 6: Final answer
    x = 9,240.71

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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.