Home / 7,189.41-9,921.60-3,915.37

Finding the Fourth Proportional to 7,189.41, 9,921.60 and 3,915.37

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Solution

The fourth proportional to 7,189.41, 9,921.60 and 3,915.37 is: 5,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.41 : 9,921.60 = 3,915.37 : x
  2. Step 2: Convert to fraction form
    7,189.41/9,921.60 = 3,915.37/x
  3. Step 3: Cross multiply
    7,189.41x = 9,921.60 × 3,915.37
  4. Step 4: Simplify right side
    7,189.41x = 38,846,728.79
  5. Step 5: Solve for x
    x = 38,846,728.79/7,189.41
  6. Step 6: Final answer
    x = 5,403.33

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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.