Home / 3,613.36-4,985.30-2,121.34

Finding the Fourth Proportional to 3,613.36, 4,985.30 and 2,121.34

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Solution

The fourth proportional to 3,613.36, 4,985.30 and 2,121.34 is: 2,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.36 : 4,985.30 = 2,121.34 : x
  2. Step 2: Convert to fraction form
    3,613.36/4,985.30 = 2,121.34/x
  3. Step 3: Cross multiply
    3,613.36x = 4,985.30 × 2,121.34
  4. Step 4: Simplify right side
    3,613.36x = 10,575,516.30
  5. Step 5: Solve for x
    x = 10,575,516.30/3,613.36
  6. Step 6: Final answer
    x = 2,926.78

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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.