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Finding the Fourth Proportional to 6,351.68, 8,765.64 and 3,519.20

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Solution

The fourth proportional to 6,351.68, 8,765.64 and 3,519.20 is: 4,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,351.68 : 8,765.64 = 3,519.20 : x
  2. Step 2: Convert to fraction form
    6,351.68/8,765.64 = 3,519.20/x
  3. Step 3: Cross multiply
    6,351.68x = 8,765.64 × 3,519.20
  4. Step 4: Simplify right side
    6,351.68x = 30,848,040.29
  5. Step 5: Solve for x
    x = 30,848,040.29/6,351.68
  6. Step 6: Final answer
    x = 4,856.67

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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.