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Finding the Fourth Proportional to 6,487.20, 8,951.20 and 3,835.44

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Solution

The fourth proportional to 6,487.20, 8,951.20 and 3,835.44 is: 5,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.20 : 8,951.20 = 3,835.44 : x
  2. Step 2: Convert to fraction form
    6,487.20/8,951.20 = 3,835.44/x
  3. Step 3: Cross multiply
    6,487.20x = 8,951.20 × 3,835.44
  4. Step 4: Simplify right side
    6,487.20x = 34,331,790.53
  5. Step 5: Solve for x
    x = 34,331,790.53/6,487.20
  6. Step 6: Final answer
    x = 5,292.24

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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.