Home / 5,136.82-7,705.16-1,241.20

Finding the Fourth Proportional to 5,136.82, 7,705.16 and 1,241.20

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Solution

The fourth proportional to 5,136.82, 7,705.16 and 1,241.20 is: 1,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.82 : 7,705.16 = 1,241.20 : x
  2. Step 2: Convert to fraction form
    5,136.82/7,705.16 = 1,241.20/x
  3. Step 3: Cross multiply
    5,136.82x = 7,705.16 × 1,241.20
  4. Step 4: Simplify right side
    5,136.82x = 9,563,599.86
  5. Step 5: Solve for x
    x = 9,563,599.86/5,136.82
  6. Step 6: Final answer
    x = 1,861.78

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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.