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Finding the Fourth Proportional to 8,938.92, 13,388.94 and 8,532.84

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Solution

The fourth proportional to 8,938.92, 13,388.94 and 8,532.84 is: 12,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.92 : 13,388.94 = 8,532.84 : x
  2. Step 2: Convert to fraction form
    8,938.92/13,388.94 = 8,532.84/x
  3. Step 3: Cross multiply
    8,938.92x = 13,388.94 × 8,532.84
  4. Step 4: Simplify right side
    8,938.92x = 114,245,682.79
  5. Step 5: Solve for x
    x = 114,245,682.79/8,938.92
  6. Step 6: Final answer
    x = 12,780.70

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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.