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Finding the Fourth Proportional to 6,690.92, 9,234.54 and 4,339.89

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Solution

The fourth proportional to 6,690.92, 9,234.54 and 4,339.89 is: 5,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.92 : 9,234.54 = 4,339.89 : x
  2. Step 2: Convert to fraction form
    6,690.92/9,234.54 = 4,339.89/x
  3. Step 3: Cross multiply
    6,690.92x = 9,234.54 × 4,339.89
  4. Step 4: Simplify right side
    6,690.92x = 40,076,887.80
  5. Step 5: Solve for x
    x = 40,076,887.80/6,690.92
  6. Step 6: Final answer
    x = 5,989.75

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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.