Home / 3,578.61-4,938.77-1,985.42

Finding the Fourth Proportional to 3,578.61, 4,938.77 and 1,985.42

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Solution

The fourth proportional to 3,578.61, 4,938.77 and 1,985.42 is: 2,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.61 : 4,938.77 = 1,985.42 : x
  2. Step 2: Convert to fraction form
    3,578.61/4,938.77 = 1,985.42/x
  3. Step 3: Cross multiply
    3,578.61x = 4,938.77 × 1,985.42
  4. Step 4: Simplify right side
    3,578.61x = 9,805,498.11
  5. Step 5: Solve for x
    x = 9,805,498.11/3,578.61
  6. Step 6: Final answer
    x = 2,740.03

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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.