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Finding the Fourth Proportional to 1,644.91, 2,269.91 and 1,015.70

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Solution

The fourth proportional to 1,644.91, 2,269.91 and 1,015.70 is: 1,401.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.91 : 2,269.91 = 1,015.70 : x
  2. Step 2: Convert to fraction form
    1,644.91/2,269.91 = 1,015.70/x
  3. Step 3: Cross multiply
    1,644.91x = 2,269.91 × 1,015.70
  4. Step 4: Simplify right side
    1,644.91x = 2,305,538.78
  5. Step 5: Solve for x
    x = 2,305,538.78/1,644.91
  6. Step 6: Final answer
    x = 1,401.62

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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.