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Finding the Fourth Proportional to 2,013.75, 3,020.63 and 715.23

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Solution

The fourth proportional to 2,013.75, 3,020.63 and 715.23 is: 1,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.75 : 3,020.63 = 715.23 : x
  2. Step 2: Convert to fraction form
    2,013.75/3,020.63 = 715.23/x
  3. Step 3: Cross multiply
    2,013.75x = 3,020.63 × 715.23
  4. Step 4: Simplify right side
    2,013.75x = 2,160,441.62
  5. Step 5: Solve for x
    x = 2,160,441.62/2,013.75
  6. Step 6: Final answer
    x = 1,072.85

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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.