Home / 1,415.16-2,122.96-441.03

Finding the Fourth Proportional to 1,415.16, 2,122.96 and 441.03

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Solution

The fourth proportional to 1,415.16, 2,122.96 and 441.03 is: 661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.16 : 2,122.96 = 441.03 : x
  2. Step 2: Convert to fraction form
    1,415.16/2,122.96 = 441.03/x
  3. Step 3: Cross multiply
    1,415.16x = 2,122.96 × 441.03
  4. Step 4: Simplify right side
    1,415.16x = 936,289.05
  5. Step 5: Solve for x
    x = 936,289.05/1,415.16
  6. Step 6: Final answer
    x = 661.61

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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.