Home / 2,758.90-4,136.19-1,890.58

Finding the Fourth Proportional to 2,758.90, 4,136.19 and 1,890.58

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Solution

The fourth proportional to 2,758.90, 4,136.19 and 1,890.58 is: 2,834.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.90 : 4,136.19 = 1,890.58 : x
  2. Step 2: Convert to fraction form
    2,758.90/4,136.19 = 1,890.58/x
  3. Step 3: Cross multiply
    2,758.90x = 4,136.19 × 1,890.58
  4. Step 4: Simplify right side
    2,758.90x = 7,819,798.09
  5. Step 5: Solve for x
    x = 7,819,798.09/2,758.90
  6. Step 6: Final answer
    x = 2,834.39

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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.