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Finding the Fourth Proportional to 2,779.97, 3,836.52 and 1,520.99

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Solution

The fourth proportional to 2,779.97, 3,836.52 and 1,520.99 is: 2,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.97 : 3,836.52 = 1,520.99 : x
  2. Step 2: Convert to fraction form
    2,779.97/3,836.52 = 1,520.99/x
  3. Step 3: Cross multiply
    2,779.97x = 3,836.52 × 1,520.99
  4. Step 4: Simplify right side
    2,779.97x = 5,835,289.37
  5. Step 5: Solve for x
    x = 5,835,289.37/2,779.97
  6. Step 6: Final answer
    x = 2,099.05

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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.