Home / 6,128.22-8,458.68-3,611.79

Finding the Fourth Proportional to 6,128.22, 8,458.68 and 3,611.79

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Solution

The fourth proportional to 6,128.22, 8,458.68 and 3,611.79 is: 4,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.22 : 8,458.68 = 3,611.79 : x
  2. Step 2: Convert to fraction form
    6,128.22/8,458.68 = 3,611.79/x
  3. Step 3: Cross multiply
    6,128.22x = 8,458.68 × 3,611.79
  4. Step 4: Simplify right side
    6,128.22x = 30,550,915.48
  5. Step 5: Solve for x
    x = 30,550,915.48/6,128.22
  6. Step 6: Final answer
    x = 4,985.29

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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.