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Finding the Fourth Proportional to 3,021.10, 4,530.03 and 940.21

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Solution

The fourth proportional to 3,021.10, 4,530.03 and 940.21 is: 1,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.10 : 4,530.03 = 940.21 : x
  2. Step 2: Convert to fraction form
    3,021.10/4,530.03 = 940.21/x
  3. Step 3: Cross multiply
    3,021.10x = 4,530.03 × 940.21
  4. Step 4: Simplify right side
    3,021.10x = 4,259,179.51
  5. Step 5: Solve for x
    x = 4,259,179.51/3,021.10
  6. Step 6: Final answer
    x = 1,409.81

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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.