Home / 2,798.38-3,861.84-1,539.57

Finding the Fourth Proportional to 2,798.38, 3,861.84 and 1,539.57

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Solution

The fourth proportional to 2,798.38, 3,861.84 and 1,539.57 is: 2,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.38 : 3,861.84 = 1,539.57 : x
  2. Step 2: Convert to fraction form
    2,798.38/3,861.84 = 1,539.57/x
  3. Step 3: Cross multiply
    2,798.38x = 3,861.84 × 1,539.57
  4. Step 4: Simplify right side
    2,798.38x = 5,945,593.26
  5. Step 5: Solve for x
    x = 5,945,593.26/2,798.38
  6. Step 6: Final answer
    x = 2,124.65

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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.