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Finding the Fourth Proportional to 2,869.75, 3,960.26 and 1,627.75

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Solution

The fourth proportional to 2,869.75, 3,960.26 and 1,627.75 is: 2,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.75 : 3,960.26 = 1,627.75 : x
  2. Step 2: Convert to fraction form
    2,869.75/3,960.26 = 1,627.75/x
  3. Step 3: Cross multiply
    2,869.75x = 3,960.26 × 1,627.75
  4. Step 4: Simplify right side
    2,869.75x = 6,446,313.22
  5. Step 5: Solve for x
    x = 6,446,313.22/2,869.75
  6. Step 6: Final answer
    x = 2,246.30

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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.