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Finding the Fourth Proportional to 5,578.38, 8,368.99 and 3,938.13

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Solution

The fourth proportional to 5,578.38, 8,368.99 and 3,938.13 is: 5,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.38 : 8,368.99 = 3,938.13 : x
  2. Step 2: Convert to fraction form
    5,578.38/8,368.99 = 3,938.13/x
  3. Step 3: Cross multiply
    5,578.38x = 8,368.99 × 3,938.13
  4. Step 4: Simplify right side
    5,578.38x = 32,958,160.74
  5. Step 5: Solve for x
    x = 32,958,160.74/5,578.38
  6. Step 6: Final answer
    x = 5,908.20

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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.