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Finding the Fourth Proportional to 2,774.85, 4,163.22 and 926.16

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Solution

The fourth proportional to 2,774.85, 4,163.22 and 926.16 is: 1,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.85 : 4,163.22 = 926.16 : x
  2. Step 2: Convert to fraction form
    2,774.85/4,163.22 = 926.16/x
  3. Step 3: Cross multiply
    2,774.85x = 4,163.22 × 926.16
  4. Step 4: Simplify right side
    2,774.85x = 3,855,807.84
  5. Step 5: Solve for x
    x = 3,855,807.84/2,774.85
  6. Step 6: Final answer
    x = 1,389.56

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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.