Home / 3,613.15-4,985.97-2,121.44

Finding the Fourth Proportional to 3,613.15, 4,985.97 and 2,121.44

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Solution

The fourth proportional to 3,613.15, 4,985.97 and 2,121.44 is: 2,927.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.15 : 4,985.97 = 2,121.44 : x
  2. Step 2: Convert to fraction form
    3,613.15/4,985.97 = 2,121.44/x
  3. Step 3: Cross multiply
    3,613.15x = 4,985.97 × 2,121.44
  4. Step 4: Simplify right side
    3,613.15x = 10,577,403.31
  5. Step 5: Solve for x
    x = 10,577,403.31/3,613.15
  6. Step 6: Final answer
    x = 2,927.47

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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.