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Finding the Fourth Proportional to 8,240.64, 12,362.78 and 4,540.97

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Solution

The fourth proportional to 8,240.64, 12,362.78 and 4,540.97 is: 6,812.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.64 : 12,362.78 = 4,540.97 : x
  2. Step 2: Convert to fraction form
    8,240.64/12,362.78 = 4,540.97/x
  3. Step 3: Cross multiply
    8,240.64x = 12,362.78 × 4,540.97
  4. Step 4: Simplify right side
    8,240.64x = 56,138,928.58
  5. Step 5: Solve for x
    x = 56,138,928.58/8,240.64
  6. Step 6: Final answer
    x = 6,812.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.