Home / 2,781.81-4,172.85-1,626.75

Finding the Fourth Proportional to 2,781.81, 4,172.85 and 1,626.75

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Solution

The fourth proportional to 2,781.81, 4,172.85 and 1,626.75 is: 2,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.81 : 4,172.85 = 1,626.75 : x
  2. Step 2: Convert to fraction form
    2,781.81/4,172.85 = 1,626.75/x
  3. Step 3: Cross multiply
    2,781.81x = 4,172.85 × 1,626.75
  4. Step 4: Simplify right side
    2,781.81x = 6,788,183.74
  5. Step 5: Solve for x
    x = 6,788,183.74/2,781.81
  6. Step 6: Final answer
    x = 2,440.20

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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.