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Finding the Fourth Proportional to 5,628.32, 8,440.32 and 3,891.68

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Solution

The fourth proportional to 5,628.32, 8,440.32 and 3,891.68 is: 5,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.32 : 8,440.32 = 3,891.68 : x
  2. Step 2: Convert to fraction form
    5,628.32/8,440.32 = 3,891.68/x
  3. Step 3: Cross multiply
    5,628.32x = 8,440.32 × 3,891.68
  4. Step 4: Simplify right side
    5,628.32x = 32,847,024.54
  5. Step 5: Solve for x
    x = 32,847,024.54/5,628.32
  6. Step 6: Final answer
    x = 5,836.03

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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.