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Finding the Fourth Proportional to 6,670.64, 10,007.70 and 3,899.67

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Solution

The fourth proportional to 6,670.64, 10,007.70 and 3,899.67 is: 5,850.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.64 : 10,007.70 = 3,899.67 : x
  2. Step 2: Convert to fraction form
    6,670.64/10,007.70 = 3,899.67/x
  3. Step 3: Cross multiply
    6,670.64x = 10,007.70 × 3,899.67
  4. Step 4: Simplify right side
    6,670.64x = 39,026,750.36
  5. Step 5: Solve for x
    x = 39,026,750.36/6,670.64
  6. Step 6: Final answer
    x = 5,850.53

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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.