Home / 2,112.16-3,172.08-1,840.16

Finding the Fourth Proportional to 2,112.16, 3,172.08 and 1,840.16

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Solution

The fourth proportional to 2,112.16, 3,172.08 and 1,840.16 is: 2,763.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.16 : 3,172.08 = 1,840.16 : x
  2. Step 2: Convert to fraction form
    2,112.16/3,172.08 = 1,840.16/x
  3. Step 3: Cross multiply
    2,112.16x = 3,172.08 × 1,840.16
  4. Step 4: Simplify right side
    2,112.16x = 5,837,134.73
  5. Step 5: Solve for x
    x = 5,837,134.73/2,112.16
  6. Step 6: Final answer
    x = 2,763.59

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1.5x scale

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.