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Finding the Fourth Proportional to 8,303.36, 12,449.28 and 3,917.12

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Solution

The fourth proportional to 8,303.36, 12,449.28 and 3,917.12 is: 5,872.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,303.36 : 12,449.28 = 3,917.12 : x
  2. Step 2: Convert to fraction form
    8,303.36/12,449.28 = 3,917.12/x
  3. Step 3: Cross multiply
    8,303.36x = 12,449.28 × 3,917.12
  4. Step 4: Simplify right side
    8,303.36x = 48,765,323.67
  5. Step 5: Solve for x
    x = 48,765,323.67/8,303.36
  6. Step 6: Final answer
    x = 5,872.96

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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.