Home / 7,944.16-11,915.68-2,100.64

Finding the Fourth Proportional to 7,944.16, 11,915.68 and 2,100.64

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Solution

The fourth proportional to 7,944.16, 11,915.68 and 2,100.64 is: 3,150.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,944.16 : 11,915.68 = 2,100.64 : x
  2. Step 2: Convert to fraction form
    7,944.16/11,915.68 = 2,100.64/x
  3. Step 3: Cross multiply
    7,944.16x = 11,915.68 × 2,100.64
  4. Step 4: Simplify right side
    7,944.16x = 25,030,554.04
  5. Step 5: Solve for x
    x = 25,030,554.04/7,944.16
  6. Step 6: Final answer
    x = 3,150.81

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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.