Home / 3,389.61-5,085.36-2,091.99

Finding the Fourth Proportional to 3,389.61, 5,085.36 and 2,091.99

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Solution

The fourth proportional to 3,389.61, 5,085.36 and 2,091.99 is: 3,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.61 : 5,085.36 = 2,091.99 : x
  2. Step 2: Convert to fraction form
    3,389.61/5,085.36 = 2,091.99/x
  3. Step 3: Cross multiply
    3,389.61x = 5,085.36 × 2,091.99
  4. Step 4: Simplify right side
    3,389.61x = 10,638,522.27
  5. Step 5: Solve for x
    x = 10,638,522.27/3,389.61
  6. Step 6: Final answer
    x = 3,138.57

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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.