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Finding the Fourth Proportional to 1,996.70, 2,996.61 and 1,607.67

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Solution

The fourth proportional to 1,996.70, 2,996.61 and 1,607.67 is: 2,412.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.70 : 2,996.61 = 1,607.67 : x
  2. Step 2: Convert to fraction form
    1,996.70/2,996.61 = 1,607.67/x
  3. Step 3: Cross multiply
    1,996.70x = 2,996.61 × 1,607.67
  4. Step 4: Simplify right side
    1,996.70x = 4,817,564.66
  5. Step 5: Solve for x
    x = 4,817,564.66/1,996.70
  6. Step 6: Final answer
    x = 2,412.76

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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.