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Finding the Fourth Proportional to 3,578.87, 4,936.19 and 2,397.89

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Solution

The fourth proportional to 3,578.87, 4,936.19 and 2,397.89 is: 3,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.87 : 4,936.19 = 2,397.89 : x
  2. Step 2: Convert to fraction form
    3,578.87/4,936.19 = 2,397.89/x
  3. Step 3: Cross multiply
    3,578.87x = 4,936.19 × 2,397.89
  4. Step 4: Simplify right side
    3,578.87x = 11,836,403.97
  5. Step 5: Solve for x
    x = 11,836,403.97/3,578.87
  6. Step 6: Final answer
    x = 3,307.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.