Home / 3,611.36-5,415.92-1,389.60

Finding the Fourth Proportional to 3,611.36, 5,415.92 and 1,389.60

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Solution

The fourth proportional to 3,611.36, 5,415.92 and 1,389.60 is: 2,083.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.36 : 5,415.92 = 1,389.60 : x
  2. Step 2: Convert to fraction form
    3,611.36/5,415.92 = 1,389.60/x
  3. Step 3: Cross multiply
    3,611.36x = 5,415.92 × 1,389.60
  4. Step 4: Simplify right side
    3,611.36x = 7,525,962.43
  5. Step 5: Solve for x
    x = 7,525,962.43/3,611.36
  6. Step 6: Final answer
    x = 2,083.97

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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.