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Finding the Fourth Proportional to 6,690.99, 9,229.85 and 5,269.44

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Solution

The fourth proportional to 6,690.99, 9,229.85 and 5,269.44 is: 7,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.99 : 9,229.85 = 5,269.44 : x
  2. Step 2: Convert to fraction form
    6,690.99/9,229.85 = 5,269.44/x
  3. Step 3: Cross multiply
    6,690.99x = 9,229.85 × 5,269.44
  4. Step 4: Simplify right side
    6,690.99x = 48,636,114.44
  5. Step 5: Solve for x
    x = 48,636,114.44/6,690.99
  6. Step 6: Final answer
    x = 7,268.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.