Home / 3,638.49-5,021.72-2,146.77

Finding the Fourth Proportional to 3,638.49, 5,021.72 and 2,146.77

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Solution

The fourth proportional to 3,638.49, 5,021.72 and 2,146.77 is: 2,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.49 : 5,021.72 = 2,146.77 : x
  2. Step 2: Convert to fraction form
    3,638.49/5,021.72 = 2,146.77/x
  3. Step 3: Cross multiply
    3,638.49x = 5,021.72 × 2,146.77
  4. Step 4: Simplify right side
    3,638.49x = 10,780,467.11
  5. Step 5: Solve for x
    x = 10,780,467.11/3,638.49
  6. Step 6: Final answer
    x = 2,962.90

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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.