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Finding the Fourth Proportional to 2,774.45, 4,161.39 and 826.67

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Solution

The fourth proportional to 2,774.45, 4,161.39 and 826.67 is: 1,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.45 : 4,161.39 = 826.67 : x
  2. Step 2: Convert to fraction form
    2,774.45/4,161.39 = 826.67/x
  3. Step 3: Cross multiply
    2,774.45x = 4,161.39 × 826.67
  4. Step 4: Simplify right side
    2,774.45x = 3,440,075.46
  5. Step 5: Solve for x
    x = 3,440,075.46/2,774.45
  6. Step 6: Final answer
    x = 1,239.91

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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.