Home / 1,789.23-2,683.71-619.79

Finding the Fourth Proportional to 1,789.23, 2,683.71 and 619.79

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Solution

The fourth proportional to 1,789.23, 2,683.71 and 619.79 is: 929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.23 : 2,683.71 = 619.79 : x
  2. Step 2: Convert to fraction form
    1,789.23/2,683.71 = 619.79/x
  3. Step 3: Cross multiply
    1,789.23x = 2,683.71 × 619.79
  4. Step 4: Simplify right side
    1,789.23x = 1,663,336.62
  5. Step 5: Solve for x
    x = 1,663,336.62/1,789.23
  6. Step 6: Final answer
    x = 929.64

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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.