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Finding the Fourth Proportional to 6,276.66, 8,664.12 and 5,388.90

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Solution

The fourth proportional to 6,276.66, 8,664.12 and 5,388.90 is: 7,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,276.66 : 8,664.12 = 5,388.90 : x
  2. Step 2: Convert to fraction form
    6,276.66/8,664.12 = 5,388.90/x
  3. Step 3: Cross multiply
    6,276.66x = 8,664.12 × 5,388.90
  4. Step 4: Simplify right side
    6,276.66x = 46,690,076.27
  5. Step 5: Solve for x
    x = 46,690,076.27/6,276.66
  6. Step 6: Final answer
    x = 7,438.68

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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.