Home / 3,621.28-4,998.35-2,129.68

Finding the Fourth Proportional to 3,621.28, 4,998.35 and 2,129.68

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Solution

The fourth proportional to 3,621.28, 4,998.35 and 2,129.68 is: 2,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.28 : 4,998.35 = 2,129.68 : x
  2. Step 2: Convert to fraction form
    3,621.28/4,998.35 = 2,129.68/x
  3. Step 3: Cross multiply
    3,621.28x = 4,998.35 × 2,129.68
  4. Step 4: Simplify right side
    3,621.28x = 10,644,886.03
  5. Step 5: Solve for x
    x = 10,644,886.03/3,621.28
  6. Step 6: Final answer
    x = 2,939.54

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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.