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Finding the Fourth Proportional to 3,801.81, 5,702.72 and 2,628.12

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Solution

The fourth proportional to 3,801.81, 5,702.72 and 2,628.12 is: 3,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.81 : 5,702.72 = 2,628.12 : x
  2. Step 2: Convert to fraction form
    3,801.81/5,702.72 = 2,628.12/x
  3. Step 3: Cross multiply
    3,801.81x = 5,702.72 × 2,628.12
  4. Step 4: Simplify right side
    3,801.81x = 14,987,432.49
  5. Step 5: Solve for x
    x = 14,987,432.49/3,801.81
  6. Step 6: Final answer
    x = 3,942.18

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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.