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Finding the Fourth Proportional to 1,961.10, 2,941.59 and 662.46

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Solution

The fourth proportional to 1,961.10, 2,941.59 and 662.46 is: 993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.10 : 2,941.59 = 662.46 : x
  2. Step 2: Convert to fraction form
    1,961.10/2,941.59 = 662.46/x
  3. Step 3: Cross multiply
    1,961.10x = 2,941.59 × 662.46
  4. Step 4: Simplify right side
    1,961.10x = 1,948,685.71
  5. Step 5: Solve for x
    x = 1,948,685.71/1,961.10
  6. Step 6: Final answer
    x = 993.67

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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.