Home / 3,945.70-5,445.81-2,454.22

Finding the Fourth Proportional to 3,945.70, 5,445.81 and 2,454.22

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Solution

The fourth proportional to 3,945.70, 5,445.81 and 2,454.22 is: 3,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.70 : 5,445.81 = 2,454.22 : x
  2. Step 2: Convert to fraction form
    3,945.70/5,445.81 = 2,454.22/x
  3. Step 3: Cross multiply
    3,945.70x = 5,445.81 × 2,454.22
  4. Step 4: Simplify right side
    3,945.70x = 13,365,215.82
  5. Step 5: Solve for x
    x = 13,365,215.82/3,945.70
  6. Step 6: Final answer
    x = 3,387.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.