Home / 2,798.03-3,861.20-1,539.09

Finding the Fourth Proportional to 2,798.03, 3,861.20 and 1,539.09

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Solution

The fourth proportional to 2,798.03, 3,861.20 and 1,539.09 is: 2,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.03 : 3,861.20 = 1,539.09 : x
  2. Step 2: Convert to fraction form
    2,798.03/3,861.20 = 1,539.09/x
  3. Step 3: Cross multiply
    2,798.03x = 3,861.20 × 1,539.09
  4. Step 4: Simplify right side
    2,798.03x = 5,942,734.31
  5. Step 5: Solve for x
    x = 5,942,734.31/2,798.03
  6. Step 6: Final answer
    x = 2,123.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.