Home / 8,705.80-12,015.52-5,170.96

Finding the Fourth Proportional to 8,705.80, 12,015.52 and 5,170.96

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Solution

The fourth proportional to 8,705.80, 12,015.52 and 5,170.96 is: 7,136.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.80 : 12,015.52 = 5,170.96 : x
  2. Step 2: Convert to fraction form
    8,705.80/12,015.52 = 5,170.96/x
  3. Step 3: Cross multiply
    8,705.80x = 12,015.52 × 5,170.96
  4. Step 4: Simplify right side
    8,705.80x = 62,131,773.30
  5. Step 5: Solve for x
    x = 62,131,773.30/8,705.80
  6. Step 6: Final answer
    x = 7,136.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.