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Finding the Fourth Proportional to 8,200, 12,305.04 and 4,307.20

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Solution

The fourth proportional to 8,200, 12,305.04 and 4,307.20 is: 6,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200 : 12,305.04 = 4,307.20 : x
  2. Step 2: Convert to fraction form
    8,200/12,305.04 = 4,307.20/x
  3. Step 3: Cross multiply
    8,200x = 12,305.04 × 4,307.20
  4. Step 4: Simplify right side
    8,200x = 53,000,268.29
  5. Step 5: Solve for x
    x = 53,000,268.29/8,200
  6. Step 6: Final answer
    x = 6,463.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.