Home / 6,965.20-9,611.91-3,778.49

Finding the Fourth Proportional to 6,965.20, 9,611.91 and 3,778.49

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Solution

The fourth proportional to 6,965.20, 9,611.91 and 3,778.49 is: 5,214.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,965.20 : 9,611.91 = 3,778.49 : x
  2. Step 2: Convert to fraction form
    6,965.20/9,611.91 = 3,778.49/x
  3. Step 3: Cross multiply
    6,965.20x = 9,611.91 × 3,778.49
  4. Step 4: Simplify right side
    6,965.20x = 36,318,457.76
  5. Step 5: Solve for x
    x = 36,318,457.76/6,965.20
  6. Step 6: Final answer
    x = 5,214.28

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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.