Home / 1,861.10-2,790.20-834.38

Finding the Fourth Proportional to 1,861.10, 2,790.20 and 834.38

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Solution

The fourth proportional to 1,861.10, 2,790.20 and 834.38 is: 1,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.10 : 2,790.20 = 834.38 : x
  2. Step 2: Convert to fraction form
    1,861.10/2,790.20 = 834.38/x
  3. Step 3: Cross multiply
    1,861.10x = 2,790.20 × 834.38
  4. Step 4: Simplify right side
    1,861.10x = 2,328,075.21
  5. Step 5: Solve for x
    x = 2,328,075.21/1,861.10
  6. Step 6: Final answer
    x = 1,250.92

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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.