Home / 1,589.25-2,193.17-890.79

Finding the Fourth Proportional to 1,589.25, 2,193.17 and 890.79

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Solution

The fourth proportional to 1,589.25, 2,193.17 and 890.79 is: 1,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.25 : 2,193.17 = 890.79 : x
  2. Step 2: Convert to fraction form
    1,589.25/2,193.17 = 890.79/x
  3. Step 3: Cross multiply
    1,589.25x = 2,193.17 × 890.79
  4. Step 4: Simplify right side
    1,589.25x = 1,953,649.45
  5. Step 5: Solve for x
    x = 1,953,649.45/1,589.25
  6. Step 6: Final answer
    x = 1,229.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.