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Finding the Fourth Proportional to 8,364.40, 12,550.20 and 4,260.40

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Solution

The fourth proportional to 8,364.40, 12,550.20 and 4,260.40 is: 6,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.40 : 12,550.20 = 4,260.40 : x
  2. Step 2: Convert to fraction form
    8,364.40/12,550.20 = 4,260.40/x
  3. Step 3: Cross multiply
    8,364.40x = 12,550.20 × 4,260.40
  4. Step 4: Simplify right side
    8,364.40x = 53,468,872.08
  5. Step 5: Solve for x
    x = 53,468,872.08/8,364.40
  6. Step 6: Final answer
    x = 6,392.43

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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.