Home / 2,780.23-4,170.36-1,136.41

Finding the Fourth Proportional to 2,780.23, 4,170.36 and 1,136.41

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Solution

The fourth proportional to 2,780.23, 4,170.36 and 1,136.41 is: 1,704.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.23 : 4,170.36 = 1,136.41 : x
  2. Step 2: Convert to fraction form
    2,780.23/4,170.36 = 1,136.41/x
  3. Step 3: Cross multiply
    2,780.23x = 4,170.36 × 1,136.41
  4. Step 4: Simplify right side
    2,780.23x = 4,739,238.81
  5. Step 5: Solve for x
    x = 4,739,238.81/2,780.23
  6. Step 6: Final answer
    x = 1,704.62

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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.