Home / 1,441.14-2,161.71-928.50

Finding the Fourth Proportional to 1,441.14, 2,161.71 and 928.50

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Solution

The fourth proportional to 1,441.14, 2,161.71 and 928.50 is: 1,392.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.14 : 2,161.71 = 928.50 : x
  2. Step 2: Convert to fraction form
    1,441.14/2,161.71 = 928.50/x
  3. Step 3: Cross multiply
    1,441.14x = 2,161.71 × 928.50
  4. Step 4: Simplify right side
    1,441.14x = 2,007,147.74
  5. Step 5: Solve for x
    x = 2,007,147.74/1,441.14
  6. Step 6: Final answer
    x = 1,392.75

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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.