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Finding the Fourth Proportional to 6,128.28, 8,457 and 3,333.84

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Solution

The fourth proportional to 6,128.28, 8,457 and 3,333.84 is: 4,600.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.28 : 8,457 = 3,333.84 : x
  2. Step 2: Convert to fraction form
    6,128.28/8,457 = 3,333.84/x
  3. Step 3: Cross multiply
    6,128.28x = 8,457 × 3,333.84
  4. Step 4: Simplify right side
    6,128.28x = 28,194,284.88
  5. Step 5: Solve for x
    x = 28,194,284.88/6,128.28
  6. Step 6: Final answer
    x = 4,600.68

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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.