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Finding the Fourth Proportional to 8,503.79, 12,757.91 and 2,660.45

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Solution

The fourth proportional to 8,503.79, 12,757.91 and 2,660.45 is: 3,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503.79 : 12,757.91 = 2,660.45 : x
  2. Step 2: Convert to fraction form
    8,503.79/12,757.91 = 2,660.45/x
  3. Step 3: Cross multiply
    8,503.79x = 12,757.91 × 2,660.45
  4. Step 4: Simplify right side
    8,503.79x = 33,941,704.57
  5. Step 5: Solve for x
    x = 33,941,704.57/8,503.79
  6. Step 6: Final answer
    x = 3,991.36

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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.