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Finding the Fourth Proportional to 2,626.46, 3,940.46 and 777.63

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Solution

The fourth proportional to 2,626.46, 3,940.46 and 777.63 is: 1,166.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.46 : 3,940.46 = 777.63 : x
  2. Step 2: Convert to fraction form
    2,626.46/3,940.46 = 777.63/x
  3. Step 3: Cross multiply
    2,626.46x = 3,940.46 × 777.63
  4. Step 4: Simplify right side
    2,626.46x = 3,064,219.91
  5. Step 5: Solve for x
    x = 3,064,219.91/2,626.46
  6. Step 6: Final answer
    x = 1,166.67

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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.