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Finding the Fourth Proportional to 2,760.06, 4,140.06 and 812.22

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Solution

The fourth proportional to 2,760.06, 4,140.06 and 812.22 is: 1,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.06 : 4,140.06 = 812.22 : x
  2. Step 2: Convert to fraction form
    2,760.06/4,140.06 = 812.22/x
  3. Step 3: Cross multiply
    2,760.06x = 4,140.06 × 812.22
  4. Step 4: Simplify right side
    2,760.06x = 3,362,639.53
  5. Step 5: Solve for x
    x = 3,362,639.53/2,760.06
  6. Step 6: Final answer
    x = 1,218.32

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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.