Home / 2,798.10-3,861.36-1,539.09

Finding the Fourth Proportional to 2,798.10, 3,861.36 and 1,539.09

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Solution

The fourth proportional to 2,798.10, 3,861.36 and 1,539.09 is: 2,123.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.10 : 3,861.36 = 1,539.09 : x
  2. Step 2: Convert to fraction form
    2,798.10/3,861.36 = 1,539.09/x
  3. Step 3: Cross multiply
    2,798.10x = 3,861.36 × 1,539.09
  4. Step 4: Simplify right side
    2,798.10x = 5,942,980.56
  5. Step 5: Solve for x
    x = 5,942,980.56/2,798.10
  6. Step 6: Final answer
    x = 2,123.93

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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.