Home / 8,705.12-13,056.60-2,861.60

Finding the Fourth Proportional to 8,705.12, 13,056.60 and 2,861.60

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Solution

The fourth proportional to 8,705.12, 13,056.60 and 2,861.60 is: 4,292.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.12 : 13,056.60 = 2,861.60 : x
  2. Step 2: Convert to fraction form
    8,705.12/13,056.60 = 2,861.60/x
  3. Step 3: Cross multiply
    8,705.12x = 13,056.60 × 2,861.60
  4. Step 4: Simplify right side
    8,705.12x = 37,362,766.56
  5. Step 5: Solve for x
    x = 37,362,766.56/8,705.12
  6. Step 6: Final answer
    x = 4,292.04

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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.