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Finding the Fourth Proportional to 8,745.84, 13,127.72 and 6,819.12

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Solution

The fourth proportional to 8,745.84, 13,127.72 and 6,819.12 is: 10,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.84 : 13,127.72 = 6,819.12 : x
  2. Step 2: Convert to fraction form
    8,745.84/13,127.72 = 6,819.12/x
  3. Step 3: Cross multiply
    8,745.84x = 13,127.72 × 6,819.12
  4. Step 4: Simplify right side
    8,745.84x = 89,519,498.01
  5. Step 5: Solve for x
    x = 89,519,498.01/8,745.84
  6. Step 6: Final answer
    x = 10,235.67

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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.