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Finding the Fourth Proportional to 2,918.70, 4,372.81 and 1,601.03

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Solution

The fourth proportional to 2,918.70, 4,372.81 and 1,601.03 is: 2,398.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.70 : 4,372.81 = 1,601.03 : x
  2. Step 2: Convert to fraction form
    2,918.70/4,372.81 = 1,601.03/x
  3. Step 3: Cross multiply
    2,918.70x = 4,372.81 × 1,601.03
  4. Step 4: Simplify right side
    2,918.70x = 7,001,006.92
  5. Step 5: Solve for x
    x = 7,001,006.92/2,918.70
  6. Step 6: Final answer
    x = 2,398.67

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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.