Home / 2,148.32-3,219.78-1,161.09

Finding the Fourth Proportional to 2,148.32, 3,219.78 and 1,161.09

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Solution

The fourth proportional to 2,148.32, 3,219.78 and 1,161.09 is: 1,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.32 : 3,219.78 = 1,161.09 : x
  2. Step 2: Convert to fraction form
    2,148.32/3,219.78 = 1,161.09/x
  3. Step 3: Cross multiply
    2,148.32x = 3,219.78 × 1,161.09
  4. Step 4: Simplify right side
    2,148.32x = 3,738,454.36
  5. Step 5: Solve for x
    x = 3,738,454.36/2,148.32
  6. Step 6: Final answer
    x = 1,740.18

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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.