Home / 3,578.98-4,938.52-1,985.61

Finding the Fourth Proportional to 3,578.98, 4,938.52 and 1,985.61

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Solution

The fourth proportional to 3,578.98, 4,938.52 and 1,985.61 is: 2,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.98 : 4,938.52 = 1,985.61 : x
  2. Step 2: Convert to fraction form
    3,578.98/4,938.52 = 1,985.61/x
  3. Step 3: Cross multiply
    3,578.98x = 4,938.52 × 1,985.61
  4. Step 4: Simplify right side
    3,578.98x = 9,805,940.08
  5. Step 5: Solve for x
    x = 9,805,940.08/3,578.98
  6. Step 6: Final answer
    x = 2,739.87

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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.