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Finding the Fourth Proportional to 6,388.30, 8,818.23 and 3,736.54

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Solution

The fourth proportional to 6,388.30, 8,818.23 and 3,736.54 is: 5,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.30 : 8,818.23 = 3,736.54 : x
  2. Step 2: Convert to fraction form
    6,388.30/8,818.23 = 3,736.54/x
  3. Step 3: Cross multiply
    6,388.30x = 8,818.23 × 3,736.54
  4. Step 4: Simplify right side
    6,388.30x = 32,949,669.12
  5. Step 5: Solve for x
    x = 32,949,669.12/6,388.30
  6. Step 6: Final answer
    x = 5,157.81

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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.