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Finding the Fourth Proportional to 9,361.56, 12,918.60 and 5,112.48

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Solution

The fourth proportional to 9,361.56, 12,918.60 and 5,112.48 is: 7,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.56 : 12,918.60 = 5,112.48 : x
  2. Step 2: Convert to fraction form
    9,361.56/12,918.60 = 5,112.48/x
  3. Step 3: Cross multiply
    9,361.56x = 12,918.60 × 5,112.48
  4. Step 4: Simplify right side
    9,361.56x = 66,046,084.13
  5. Step 5: Solve for x
    x = 66,046,084.13/9,361.56
  6. Step 6: Final answer
    x = 7,055.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.