Home / 1,861.32-2,790.75-982.89

Finding the Fourth Proportional to 1,861.32, 2,790.75 and 982.89

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Solution

The fourth proportional to 1,861.32, 2,790.75 and 982.89 is: 1,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.32 : 2,790.75 = 982.89 : x
  2. Step 2: Convert to fraction form
    1,861.32/2,790.75 = 982.89/x
  3. Step 3: Cross multiply
    1,861.32x = 2,790.75 × 982.89
  4. Step 4: Simplify right side
    1,861.32x = 2,743,000.27
  5. Step 5: Solve for x
    x = 2,743,000.27/1,861.32
  6. Step 6: Final answer
    x = 1,473.69

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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.