Home / 3,613.26-4,987.47-2,121.14

Finding the Fourth Proportional to 3,613.26, 4,987.47 and 2,121.14

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Solution

The fourth proportional to 3,613.26, 4,987.47 and 2,121.14 is: 2,927.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.26 : 4,987.47 = 2,121.14 : x
  2. Step 2: Convert to fraction form
    3,613.26/4,987.47 = 2,121.14/x
  3. Step 3: Cross multiply
    3,613.26x = 4,987.47 × 2,121.14
  4. Step 4: Simplify right side
    3,613.26x = 10,579,114.48
  5. Step 5: Solve for x
    x = 10,579,114.48/3,613.26
  6. Step 6: Final answer
    x = 2,927.86

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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.