Home / 1,789.19-2,683.78-490.66

Finding the Fourth Proportional to 1,789.19, 2,683.78 and 490.66

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Solution

The fourth proportional to 1,789.19, 2,683.78 and 490.66 is: 735.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.19 : 2,683.78 = 490.66 : x
  2. Step 2: Convert to fraction form
    1,789.19/2,683.78 = 490.66/x
  3. Step 3: Cross multiply
    1,789.19x = 2,683.78 × 490.66
  4. Step 4: Simplify right side
    1,789.19x = 1,316,823.49
  5. Step 5: Solve for x
    x = 1,316,823.49/1,789.19
  6. Step 6: Final answer
    x = 735.99

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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.