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Finding the Fourth Proportional to 8,247.65, 12,374.19 and 5,485.19

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Solution

The fourth proportional to 8,247.65, 12,374.19 and 5,485.19 is: 8,229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,247.65 : 12,374.19 = 5,485.19 : x
  2. Step 2: Convert to fraction form
    8,247.65/12,374.19 = 5,485.19/x
  3. Step 3: Cross multiply
    8,247.65x = 12,374.19 × 5,485.19
  4. Step 4: Simplify right side
    8,247.65x = 67,874,783.25
  5. Step 5: Solve for x
    x = 67,874,783.25/8,247.65
  6. Step 6: Final answer
    x = 8,229.59

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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.