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Finding the Fourth Proportional to 8,758.79, 13,140.41 and 2,518.67

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Solution

The fourth proportional to 8,758.79, 13,140.41 and 2,518.67 is: 3,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.79 : 13,140.41 = 2,518.67 : x
  2. Step 2: Convert to fraction form
    8,758.79/13,140.41 = 2,518.67/x
  3. Step 3: Cross multiply
    8,758.79x = 13,140.41 × 2,518.67
  4. Step 4: Simplify right side
    8,758.79x = 33,096,353.92
  5. Step 5: Solve for x
    x = 33,096,353.92/8,758.79
  6. Step 6: Final answer
    x = 3,778.64

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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.