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Finding the Fourth Proportional to 6,647.49, 9,951.93 and 3,865.68

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Solution

The fourth proportional to 6,647.49, 9,951.93 and 3,865.68 is: 5,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647.49 : 9,951.93 = 3,865.68 : x
  2. Step 2: Convert to fraction form
    6,647.49/9,951.93 = 3,865.68/x
  3. Step 3: Cross multiply
    6,647.49x = 9,951.93 × 3,865.68
  4. Step 4: Simplify right side
    6,647.49x = 38,470,976.76
  5. Step 5: Solve for x
    x = 38,470,976.76/6,647.49
  6. Step 6: Final answer
    x = 5,787.29

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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.