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Finding the Fourth Proportional to 6,385.95, 9,578.95 and 1,943.66

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Solution

The fourth proportional to 6,385.95, 9,578.95 and 1,943.66 is: 2,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.95 : 9,578.95 = 1,943.66 : x
  2. Step 2: Convert to fraction form
    6,385.95/9,578.95 = 1,943.66/x
  3. Step 3: Cross multiply
    6,385.95x = 9,578.95 × 1,943.66
  4. Step 4: Simplify right side
    6,385.95x = 18,618,241.05
  5. Step 5: Solve for x
    x = 18,618,241.05/6,385.95
  6. Step 6: Final answer
    x = 2,915.50

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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.