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Finding the Fourth Proportional to 2,623.23, 3,935.21 and 774.50

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Solution

The fourth proportional to 2,623.23, 3,935.21 and 774.50 is: 1,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.23 : 3,935.21 = 774.50 : x
  2. Step 2: Convert to fraction form
    2,623.23/3,935.21 = 774.50/x
  3. Step 3: Cross multiply
    2,623.23x = 3,935.21 × 774.50
  4. Step 4: Simplify right side
    2,623.23x = 3,047,796.60
  5. Step 5: Solve for x
    x = 3,047,796.60/2,623.23
  6. Step 6: Final answer
    x = 1,161.85

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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.