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Finding the Fourth Proportional to 7,674.84, 11,512.21 and 1,975.79

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Solution

The fourth proportional to 7,674.84, 11,512.21 and 1,975.79 is: 2,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.84 : 11,512.21 = 1,975.79 : x
  2. Step 2: Convert to fraction form
    7,674.84/11,512.21 = 1,975.79/x
  3. Step 3: Cross multiply
    7,674.84x = 11,512.21 × 1,975.79
  4. Step 4: Simplify right side
    7,674.84x = 22,745,709.40
  5. Step 5: Solve for x
    x = 22,745,709.40/7,674.84
  6. Step 6: Final answer
    x = 2,963.67

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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.