Home / 3,621-5,427.82-1,426.71

Finding the Fourth Proportional to 3,621, 5,427.82 and 1,426.71

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Solution

The fourth proportional to 3,621, 5,427.82 and 1,426.71 is: 2,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621 : 5,427.82 = 1,426.71 : x
  2. Step 2: Convert to fraction form
    3,621/5,427.82 = 1,426.71/x
  3. Step 3: Cross multiply
    3,621x = 5,427.82 × 1,426.71
  4. Step 4: Simplify right side
    3,621x = 7,743,925.07
  5. Step 5: Solve for x
    x = 7,743,925.07/3,621
  6. Step 6: Final answer
    x = 2,138.62

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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.