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Finding the Fourth Proportional to 3,020.40, 4,530.39 and 940.26

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Solution

The fourth proportional to 3,020.40, 4,530.39 and 940.26 is: 1,410.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.40 : 4,530.39 = 940.26 : x
  2. Step 2: Convert to fraction form
    3,020.40/4,530.39 = 940.26/x
  3. Step 3: Cross multiply
    3,020.40x = 4,530.39 × 940.26
  4. Step 4: Simplify right side
    3,020.40x = 4,259,744.50
  5. Step 5: Solve for x
    x = 4,259,744.50/3,020.40
  6. Step 6: Final answer
    x = 1,410.32

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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.