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Finding the Fourth Proportional to 6,319.88, 9,479.82 and 1,936.76

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Solution

The fourth proportional to 6,319.88, 9,479.82 and 1,936.76 is: 2,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.88 : 9,479.82 = 1,936.76 : x
  2. Step 2: Convert to fraction form
    6,319.88/9,479.82 = 1,936.76/x
  3. Step 3: Cross multiply
    6,319.88x = 9,479.82 × 1,936.76
  4. Step 4: Simplify right side
    6,319.88x = 18,360,136.18
  5. Step 5: Solve for x
    x = 18,360,136.18/6,319.88
  6. Step 6: Final answer
    x = 2,905.14

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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.