Home / 3,621.94-5,427.59-2,139.64

Finding the Fourth Proportional to 3,621.94, 5,427.59 and 2,139.64

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Solution

The fourth proportional to 3,621.94, 5,427.59 and 2,139.64 is: 3,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.94 : 5,427.59 = 2,139.64 : x
  2. Step 2: Convert to fraction form
    3,621.94/5,427.59 = 2,139.64/x
  3. Step 3: Cross multiply
    3,621.94x = 5,427.59 × 2,139.64
  4. Step 4: Simplify right side
    3,621.94x = 11,613,088.67
  5. Step 5: Solve for x
    x = 11,613,088.67/3,621.94
  6. Step 6: Final answer
    x = 3,206.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.