Home / 1,441.92-2,162.40-619.68

Finding the Fourth Proportional to 1,441.92, 2,162.40 and 619.68

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Solution

The fourth proportional to 1,441.92, 2,162.40 and 619.68 is: 929.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.92 : 2,162.40 = 619.68 : x
  2. Step 2: Convert to fraction form
    1,441.92/2,162.40 = 619.68/x
  3. Step 3: Cross multiply
    1,441.92x = 2,162.40 × 619.68
  4. Step 4: Simplify right side
    1,441.92x = 1,339,996.03
  5. Step 5: Solve for x
    x = 1,339,996.03/1,441.92
  6. Step 6: Final answer
    x = 929.31

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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.