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Finding the Fourth Proportional to 2,969.75, 4,455.23 and 1,021.70

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Solution

The fourth proportional to 2,969.75, 4,455.23 and 1,021.70 is: 1,532.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.75 : 4,455.23 = 1,021.70 : x
  2. Step 2: Convert to fraction form
    2,969.75/4,455.23 = 1,021.70/x
  3. Step 3: Cross multiply
    2,969.75x = 4,455.23 × 1,021.70
  4. Step 4: Simplify right side
    2,969.75x = 4,551,908.49
  5. Step 5: Solve for x
    x = 4,551,908.49/2,969.75
  6. Step 6: Final answer
    x = 1,532.76

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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.