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Finding the Fourth Proportional to 8,308.70, 12,465.29 and 3,629.13

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Solution

The fourth proportional to 8,308.70, 12,465.29 and 3,629.13 is: 5,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.70 : 12,465.29 = 3,629.13 : x
  2. Step 2: Convert to fraction form
    8,308.70/12,465.29 = 3,629.13/x
  3. Step 3: Cross multiply
    8,308.70x = 12,465.29 × 3,629.13
  4. Step 4: Simplify right side
    8,308.70x = 45,238,155.28
  5. Step 5: Solve for x
    x = 45,238,155.28/8,308.70
  6. Step 6: Final answer
    x = 5,444.67

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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.