Home / 1,945.20-2,917.75-484.34

Finding the Fourth Proportional to 1,945.20, 2,917.75 and 484.34

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Solution

The fourth proportional to 1,945.20, 2,917.75 and 484.34 is: 726.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.20 : 2,917.75 = 484.34 : x
  2. Step 2: Convert to fraction form
    1,945.20/2,917.75 = 484.34/x
  3. Step 3: Cross multiply
    1,945.20x = 2,917.75 × 484.34
  4. Step 4: Simplify right side
    1,945.20x = 1,413,167.24
  5. Step 5: Solve for x
    x = 1,413,167.24/1,945.20
  6. Step 6: Final answer
    x = 726.49

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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.