Home / 2,140.38-2,951.91-1,644.21

Finding the Fourth Proportional to 2,140.38, 2,951.91 and 1,644.21

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Solution

The fourth proportional to 2,140.38, 2,951.91 and 1,644.21 is: 2,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.38 : 2,951.91 = 1,644.21 : x
  2. Step 2: Convert to fraction form
    2,140.38/2,951.91 = 1,644.21/x
  3. Step 3: Cross multiply
    2,140.38x = 2,951.91 × 1,644.21
  4. Step 4: Simplify right side
    2,140.38x = 4,853,559.94
  5. Step 5: Solve for x
    x = 4,853,559.94/2,140.38
  6. Step 6: Final answer
    x = 2,267.62

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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.