Home / 2,780.55-4,168.95-1,136.64

Finding the Fourth Proportional to 2,780.55, 4,168.95 and 1,136.64

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Solution

The fourth proportional to 2,780.55, 4,168.95 and 1,136.64 is: 1,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.55 : 4,168.95 = 1,136.64 : x
  2. Step 2: Convert to fraction form
    2,780.55/4,168.95 = 1,136.64/x
  3. Step 3: Cross multiply
    2,780.55x = 4,168.95 × 1,136.64
  4. Step 4: Simplify right side
    2,780.55x = 4,738,595.33
  5. Step 5: Solve for x
    x = 4,738,595.33/2,780.55
  6. Step 6: Final answer
    x = 1,704.19

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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.