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Finding the Fourth Proportional to 8,679.75, 13,020.03 and 2,440.20

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Solution

The fourth proportional to 8,679.75, 13,020.03 and 2,440.20 is: 3,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.75 : 13,020.03 = 2,440.20 : x
  2. Step 2: Convert to fraction form
    8,679.75/13,020.03 = 2,440.20/x
  3. Step 3: Cross multiply
    8,679.75x = 13,020.03 × 2,440.20
  4. Step 4: Simplify right side
    8,679.75x = 31,771,477.21
  5. Step 5: Solve for x
    x = 31,771,477.21/8,679.75
  6. Step 6: Final answer
    x = 3,660.41

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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.