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Finding the Fourth Proportional to 2,885.87, 3,982.29 and 1,626.86

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Solution

The fourth proportional to 2,885.87, 3,982.29 and 1,626.86 is: 2,244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.87 : 3,982.29 = 1,626.86 : x
  2. Step 2: Convert to fraction form
    2,885.87/3,982.29 = 1,626.86/x
  3. Step 3: Cross multiply
    2,885.87x = 3,982.29 × 1,626.86
  4. Step 4: Simplify right side
    2,885.87x = 6,478,628.31
  5. Step 5: Solve for x
    x = 6,478,628.31/2,885.87
  6. Step 6: Final answer
    x = 2,244.95

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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.