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Finding the Fourth Proportional to 2,013.69, 3,020.45 and 715.14

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Solution

The fourth proportional to 2,013.69, 3,020.45 and 715.14 is: 1,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.69 : 3,020.45 = 715.14 : x
  2. Step 2: Convert to fraction form
    2,013.69/3,020.45 = 715.14/x
  3. Step 3: Cross multiply
    2,013.69x = 3,020.45 × 715.14
  4. Step 4: Simplify right side
    2,013.69x = 2,160,041.04
  5. Step 5: Solve for x
    x = 2,160,041.04/2,013.69
  6. Step 6: Final answer
    x = 1,072.68

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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.