Home / 9,361.28-12,918.60-5,112.38

Finding the Fourth Proportional to 9,361.28, 12,918.60 and 5,112.38

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Solution

The fourth proportional to 9,361.28, 12,918.60 and 5,112.38 is: 7,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.28 : 12,918.60 = 5,112.38 : x
  2. Step 2: Convert to fraction form
    9,361.28/12,918.60 = 5,112.38/x
  3. Step 3: Cross multiply
    9,361.28x = 12,918.60 × 5,112.38
  4. Step 4: Simplify right side
    9,361.28x = 66,044,824.56
  5. Step 5: Solve for x
    x = 66,044,824.56/9,361.28
  6. Step 6: Final answer
    x = 7,055.10

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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.