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Finding the Fourth Proportional to 6,418.32, 8,856.99 and 3,768

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Solution

The fourth proportional to 6,418.32, 8,856.99 and 3,768 is: 5,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.32 : 8,856.99 = 3,768 : x
  2. Step 2: Convert to fraction form
    6,418.32/8,856.99 = 3,768/x
  3. Step 3: Cross multiply
    6,418.32x = 8,856.99 × 3,768
  4. Step 4: Simplify right side
    6,418.32x = 33,373,138.32
  5. Step 5: Solve for x
    x = 33,373,138.32/6,418.32
  6. Step 6: Final answer
    x = 5,199.67

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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.