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Finding the Fourth Proportional to 6,128, 8,456.64 and 3,333.52

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Solution

The fourth proportional to 6,128, 8,456.64 and 3,333.52 is: 4,600.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128 : 8,456.64 = 3,333.52 : x
  2. Step 2: Convert to fraction form
    6,128/8,456.64 = 3,333.52/x
  3. Step 3: Cross multiply
    6,128x = 8,456.64 × 3,333.52
  4. Step 4: Simplify right side
    6,128x = 28,190,378.57
  5. Step 5: Solve for x
    x = 28,190,378.57/6,128
  6. Step 6: Final answer
    x = 4,600.26

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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.