Home / 2,781.55-3,838.31-1,586.53

Finding the Fourth Proportional to 2,781.55, 3,838.31 and 1,586.53

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Solution

The fourth proportional to 2,781.55, 3,838.31 and 1,586.53 is: 2,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.55 : 3,838.31 = 1,586.53 : x
  2. Step 2: Convert to fraction form
    2,781.55/3,838.31 = 1,586.53/x
  3. Step 3: Cross multiply
    2,781.55x = 3,838.31 × 1,586.53
  4. Step 4: Simplify right side
    2,781.55x = 6,089,576.44
  5. Step 5: Solve for x
    x = 6,089,576.44/2,781.55
  6. Step 6: Final answer
    x = 2,189.28

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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.