Home / 1,441.21-2,161.86-401.22

Finding the Fourth Proportional to 1,441.21, 2,161.86 and 401.22

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Solution

The fourth proportional to 1,441.21, 2,161.86 and 401.22 is: 601.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.21 : 2,161.86 = 401.22 : x
  2. Step 2: Convert to fraction form
    1,441.21/2,161.86 = 401.22/x
  3. Step 3: Cross multiply
    1,441.21x = 2,161.86 × 401.22
  4. Step 4: Simplify right side
    1,441.21x = 867,381.47
  5. Step 5: Solve for x
    x = 867,381.47/1,441.21
  6. Step 6: Final answer
    x = 601.84

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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.