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Finding the Fourth Proportional to 1,945.54, 2,919.50 and 775.34

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Solution

The fourth proportional to 1,945.54, 2,919.50 and 775.34 is: 1,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.54 : 2,919.50 = 775.34 : x
  2. Step 2: Convert to fraction form
    1,945.54/2,919.50 = 775.34/x
  3. Step 3: Cross multiply
    1,945.54x = 2,919.50 × 775.34
  4. Step 4: Simplify right side
    1,945.54x = 2,263,605.13
  5. Step 5: Solve for x
    x = 2,263,605.13/1,945.54
  6. Step 6: Final answer
    x = 1,163.48

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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.