Home / 1,789.10-2,690.85-1,601.90

Finding the Fourth Proportional to 1,789.10, 2,690.85 and 1,601.90

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Solution

The fourth proportional to 1,789.10, 2,690.85 and 1,601.90 is: 2,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.10 : 2,690.85 = 1,601.90 : x
  2. Step 2: Convert to fraction form
    1,789.10/2,690.85 = 1,601.90/x
  3. Step 3: Cross multiply
    1,789.10x = 2,690.85 × 1,601.90
  4. Step 4: Simplify right side
    1,789.10x = 4,310,472.62
  5. Step 5: Solve for x
    x = 4,310,472.62/1,789.10
  6. Step 6: Final answer
    x = 2,409.30

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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.