Home / 2,861.80-4,299.90-1,822.30

Finding the Fourth Proportional to 2,861.80, 4,299.90 and 1,822.30

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Solution

The fourth proportional to 2,861.80, 4,299.90 and 1,822.30 is: 2,738.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.80 : 4,299.90 = 1,822.30 : x
  2. Step 2: Convert to fraction form
    2,861.80/4,299.90 = 1,822.30/x
  3. Step 3: Cross multiply
    2,861.80x = 4,299.90 × 1,822.30
  4. Step 4: Simplify right side
    2,861.80x = 7,835,707.77
  5. Step 5: Solve for x
    x = 7,835,707.77/2,861.80
  6. Step 6: Final answer
    x = 2,738.03

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1.5x scale

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.