Home / 6,611.24-9,120.66-3,778.28

Finding the Fourth Proportional to 6,611.24, 9,120.66 and 3,778.28

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Solution

The fourth proportional to 6,611.24, 9,120.66 and 3,778.28 is: 5,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.24 : 9,120.66 = 3,778.28 : x
  2. Step 2: Convert to fraction form
    6,611.24/9,120.66 = 3,778.28/x
  3. Step 3: Cross multiply
    6,611.24x = 9,120.66 × 3,778.28
  4. Step 4: Simplify right side
    6,611.24x = 34,460,407.26
  5. Step 5: Solve for x
    x = 34,460,407.26/6,611.24
  6. Step 6: Final answer
    x = 5,212.40

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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.