Home / 3,486.40-5,229.60-2,611.60

Finding the Fourth Proportional to 3,486.40, 5,229.60 and 2,611.60

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Solution

The fourth proportional to 3,486.40, 5,229.60 and 2,611.60 is: 3,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.40 : 5,229.60 = 2,611.60 : x
  2. Step 2: Convert to fraction form
    3,486.40/5,229.60 = 2,611.60/x
  3. Step 3: Cross multiply
    3,486.40x = 5,229.60 × 2,611.60
  4. Step 4: Simplify right side
    3,486.40x = 13,657,623.36
  5. Step 5: Solve for x
    x = 13,657,623.36/3,486.40
  6. Step 6: Final answer
    x = 3,917.40

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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.