Home / 3,613.09-4,986.02-2,121.18

Finding the Fourth Proportional to 3,613.09, 4,986.02 and 2,121.18

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Solution

The fourth proportional to 3,613.09, 4,986.02 and 2,121.18 is: 2,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.09 : 4,986.02 = 2,121.18 : x
  2. Step 2: Convert to fraction form
    3,613.09/4,986.02 = 2,121.18/x
  3. Step 3: Cross multiply
    3,613.09x = 4,986.02 × 2,121.18
  4. Step 4: Simplify right side
    3,613.09x = 10,576,245.90
  5. Step 5: Solve for x
    x = 10,576,245.90/3,613.09
  6. Step 6: Final answer
    x = 2,927.20

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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.