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Finding the Fourth Proportional to 2,013.70, 3,021.76 and 715.07

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Solution

The fourth proportional to 2,013.70, 3,021.76 and 715.07 is: 1,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.70 : 3,021.76 = 715.07 : x
  2. Step 2: Convert to fraction form
    2,013.70/3,021.76 = 715.07/x
  3. Step 3: Cross multiply
    2,013.70x = 3,021.76 × 715.07
  4. Step 4: Simplify right side
    2,013.70x = 2,160,754.81
  5. Step 5: Solve for x
    x = 2,160,754.81/2,013.70
  6. Step 6: Final answer
    x = 1,073.03

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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.