Home / 7,943.82-11,915.72-2,749.69

Finding the Fourth Proportional to 7,943.82, 11,915.72 and 2,749.69

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Solution

The fourth proportional to 7,943.82, 11,915.72 and 2,749.69 is: 4,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.82 : 11,915.72 = 2,749.69 : x
  2. Step 2: Convert to fraction form
    7,943.82/11,915.72 = 2,749.69/x
  3. Step 3: Cross multiply
    7,943.82x = 11,915.72 × 2,749.69
  4. Step 4: Simplify right side
    7,943.82x = 32,764,536.13
  5. Step 5: Solve for x
    x = 32,764,536.13/7,943.82
  6. Step 6: Final answer
    x = 4,124.53

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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.