Home / 1,619.86-2,429.28-523.97

Finding the Fourth Proportional to 1,619.86, 2,429.28 and 523.97

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Solution

The fourth proportional to 1,619.86, 2,429.28 and 523.97 is: 785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.86 : 2,429.28 = 523.97 : x
  2. Step 2: Convert to fraction form
    1,619.86/2,429.28 = 523.97/x
  3. Step 3: Cross multiply
    1,619.86x = 2,429.28 × 523.97
  4. Step 4: Simplify right side
    1,619.86x = 1,272,866.07
  5. Step 5: Solve for x
    x = 1,272,866.07/1,619.86
  6. Step 6: Final answer
    x = 785.79

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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.