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Finding the Fourth Proportional to 6,136.87, 8,472.80 and 3,780.37

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Solution

The fourth proportional to 6,136.87, 8,472.80 and 3,780.37 is: 5,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,136.87 : 8,472.80 = 3,780.37 : x
  2. Step 2: Convert to fraction form
    6,136.87/8,472.80 = 3,780.37/x
  3. Step 3: Cross multiply
    6,136.87x = 8,472.80 × 3,780.37
  4. Step 4: Simplify right side
    6,136.87x = 32,030,318.94
  5. Step 5: Solve for x
    x = 32,030,318.94/6,136.87
  6. Step 6: Final answer
    x = 5,219.32

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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.