Home / 1,441.20-2,162.10-619.68

Finding the Fourth Proportional to 1,441.20, 2,162.10 and 619.68

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Solution

The fourth proportional to 1,441.20, 2,162.10 and 619.68 is: 929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.20 : 2,162.10 = 619.68 : x
  2. Step 2: Convert to fraction form
    1,441.20/2,162.10 = 619.68/x
  3. Step 3: Cross multiply
    1,441.20x = 2,162.10 × 619.68
  4. Step 4: Simplify right side
    1,441.20x = 1,339,810.13
  5. Step 5: Solve for x
    x = 1,339,810.13/1,441.20
  6. Step 6: Final answer
    x = 929.65

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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.