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Finding the Fourth Proportional to 5,939.85, 8,909.70 and 3,490.20

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Solution

The fourth proportional to 5,939.85, 8,909.70 and 3,490.20 is: 5,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.85 : 8,909.70 = 3,490.20 : x
  2. Step 2: Convert to fraction form
    5,939.85/8,909.70 = 3,490.20/x
  3. Step 3: Cross multiply
    5,939.85x = 8,909.70 × 3,490.20
  4. Step 4: Simplify right side
    5,939.85x = 31,096,634.94
  5. Step 5: Solve for x
    x = 31,096,634.94/5,939.85
  6. Step 6: Final answer
    x = 5,235.26

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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.