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Finding the Fourth Proportional to 8,245.30, 12,368.52 and 3,314.95

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Solution

The fourth proportional to 8,245.30, 12,368.52 and 3,314.95 is: 4,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.30 : 12,368.52 = 3,314.95 : x
  2. Step 2: Convert to fraction form
    8,245.30/12,368.52 = 3,314.95/x
  3. Step 3: Cross multiply
    8,245.30x = 12,368.52 × 3,314.95
  4. Step 4: Simplify right side
    8,245.30x = 41,001,025.37
  5. Step 5: Solve for x
    x = 41,001,025.37/8,245.30
  6. Step 6: Final answer
    x = 4,972.65

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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.