Home / 3,578.76-4,938.65-1,985.49

Finding the Fourth Proportional to 3,578.76, 4,938.65 and 1,985.49

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Solution

The fourth proportional to 3,578.76, 4,938.65 and 1,985.49 is: 2,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.76 : 4,938.65 = 1,985.49 : x
  2. Step 2: Convert to fraction form
    3,578.76/4,938.65 = 1,985.49/x
  3. Step 3: Cross multiply
    3,578.76x = 4,938.65 × 1,985.49
  4. Step 4: Simplify right side
    3,578.76x = 9,805,640.19
  5. Step 5: Solve for x
    x = 9,805,640.19/3,578.76
  6. Step 6: Final answer
    x = 2,739.95

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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.