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Finding the Fourth Proportional to 8,709.70, 12,002.97 and 8,580.10

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Solution

The fourth proportional to 8,709.70, 12,002.97 and 8,580.10 is: 11,824.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.70 : 12,002.97 = 8,580.10 : x
  2. Step 2: Convert to fraction form
    8,709.70/12,002.97 = 8,580.10/x
  3. Step 3: Cross multiply
    8,709.70x = 12,002.97 × 8,580.10
  4. Step 4: Simplify right side
    8,709.70x = 102,986,682.90
  5. Step 5: Solve for x
    x = 102,986,682.90/8,709.70
  6. Step 6: Final answer
    x = 11,824.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.