Home / 3,611.43-5,416.54-1,420.79

Finding the Fourth Proportional to 3,611.43, 5,416.54 and 1,420.79

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Solution

The fourth proportional to 3,611.43, 5,416.54 and 1,420.79 is: 2,130.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.43 : 5,416.54 = 1,420.79 : x
  2. Step 2: Convert to fraction form
    3,611.43/5,416.54 = 1,420.79/x
  3. Step 3: Cross multiply
    3,611.43x = 5,416.54 × 1,420.79
  4. Step 4: Simplify right side
    3,611.43x = 7,695,735.23
  5. Step 5: Solve for x
    x = 7,695,735.23/3,611.43
  6. Step 6: Final answer
    x = 2,130.94

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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.