Home / 7,945.53-11,915.66-2,679.12

Finding the Fourth Proportional to 7,945.53, 11,915.66 and 2,679.12

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Solution

The fourth proportional to 7,945.53, 11,915.66 and 2,679.12 is: 4,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.53 : 11,915.66 = 2,679.12 : x
  2. Step 2: Convert to fraction form
    7,945.53/11,915.66 = 2,679.12/x
  3. Step 3: Cross multiply
    7,945.53x = 11,915.66 × 2,679.12
  4. Step 4: Simplify right side
    7,945.53x = 31,923,483.02
  5. Step 5: Solve for x
    x = 31,923,483.02/7,945.53
  6. Step 6: Final answer
    x = 4,017.79

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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.