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Finding the Fourth Proportional to 2,522.70, 3,784.05 and 878.85

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Solution

The fourth proportional to 2,522.70, 3,784.05 and 878.85 is: 1,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,522.70 : 3,784.05 = 878.85 : x
  2. Step 2: Convert to fraction form
    2,522.70/3,784.05 = 878.85/x
  3. Step 3: Cross multiply
    2,522.70x = 3,784.05 × 878.85
  4. Step 4: Simplify right side
    2,522.70x = 3,325,612.34
  5. Step 5: Solve for x
    x = 3,325,612.34/2,522.70
  6. Step 6: Final answer
    x = 1,318.28

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1.5x scale

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.