Home / 3,721.19-5,136.83-2,779.97

Finding the Fourth Proportional to 3,721.19, 5,136.83 and 2,779.97

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Solution

The fourth proportional to 3,721.19, 5,136.83 and 2,779.97 is: 3,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.19 : 5,136.83 = 2,779.97 : x
  2. Step 2: Convert to fraction form
    3,721.19/5,136.83 = 2,779.97/x
  3. Step 3: Cross multiply
    3,721.19x = 5,136.83 × 2,779.97
  4. Step 4: Simplify right side
    3,721.19x = 14,280,193.71
  5. Step 5: Solve for x
    x = 14,280,193.71/3,721.19
  6. Step 6: Final answer
    x = 3,837.54

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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.