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Finding the Fourth Proportional to 6,531.28, 9,011.99 and 3,879.34

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Solution

The fourth proportional to 6,531.28, 9,011.99 and 3,879.34 is: 5,352.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531.28 : 9,011.99 = 3,879.34 : x
  2. Step 2: Convert to fraction form
    6,531.28/9,011.99 = 3,879.34/x
  3. Step 3: Cross multiply
    6,531.28x = 9,011.99 × 3,879.34
  4. Step 4: Simplify right side
    6,531.28x = 34,960,560.45
  5. Step 5: Solve for x
    x = 34,960,560.45/6,531.28
  6. Step 6: Final answer
    x = 5,352.79

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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.