Home / 2,112.22-3,168.08-812.77

Finding the Fourth Proportional to 2,112.22, 3,168.08 and 812.77

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Solution

The fourth proportional to 2,112.22, 3,168.08 and 812.77 is: 1,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.22 : 3,168.08 = 812.77 : x
  2. Step 2: Convert to fraction form
    2,112.22/3,168.08 = 812.77/x
  3. Step 3: Cross multiply
    2,112.22x = 3,168.08 × 812.77
  4. Step 4: Simplify right side
    2,112.22x = 2,574,920.38
  5. Step 5: Solve for x
    x = 2,574,920.38/2,112.22
  6. Step 6: Final answer
    x = 1,219.06

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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.