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Finding the Fourth Proportional to 3,021.38, 4,530.86 and 940.70

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Solution

The fourth proportional to 3,021.38, 4,530.86 and 940.70 is: 1,410.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.38 : 4,530.86 = 940.70 : x
  2. Step 2: Convert to fraction form
    3,021.38/4,530.86 = 940.70/x
  3. Step 3: Cross multiply
    3,021.38x = 4,530.86 × 940.70
  4. Step 4: Simplify right side
    3,021.38x = 4,262,180.00
  5. Step 5: Solve for x
    x = 4,262,180.00/3,021.38
  6. Step 6: Final answer
    x = 1,410.67

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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.