Home / 2,091.87-3,136.23-1,269.99

Finding the Fourth Proportional to 2,091.87, 3,136.23 and 1,269.99

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Solution

The fourth proportional to 2,091.87, 3,136.23 and 1,269.99 is: 1,904.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.87 : 3,136.23 = 1,269.99 : x
  2. Step 2: Convert to fraction form
    2,091.87/3,136.23 = 1,269.99/x
  3. Step 3: Cross multiply
    2,091.87x = 3,136.23 × 1,269.99
  4. Step 4: Simplify right side
    2,091.87x = 3,982,980.74
  5. Step 5: Solve for x
    x = 3,982,980.74/2,091.87
  6. Step 6: Final answer
    x = 1,904.03

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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.