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Finding the Fourth Proportional to 6,319.10, 9,479.07 and 1,939.61

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Solution

The fourth proportional to 6,319.10, 9,479.07 and 1,939.61 is: 2,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.10 : 9,479.07 = 1,939.61 : x
  2. Step 2: Convert to fraction form
    6,319.10/9,479.07 = 1,939.61/x
  3. Step 3: Cross multiply
    6,319.10x = 9,479.07 × 1,939.61
  4. Step 4: Simplify right side
    6,319.10x = 18,385,651.57
  5. Step 5: Solve for x
    x = 18,385,651.57/6,319.10
  6. Step 6: Final answer
    x = 2,909.54

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Similar ratio
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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.