Home / 3,945.92-5,445.16-2,453.80

Finding the Fourth Proportional to 3,945.92, 5,445.16 and 2,453.80

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Solution

The fourth proportional to 3,945.92, 5,445.16 and 2,453.80 is: 3,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.92 : 5,445.16 = 2,453.80 : x
  2. Step 2: Convert to fraction form
    3,945.92/5,445.16 = 2,453.80/x
  3. Step 3: Cross multiply
    3,945.92x = 5,445.16 × 2,453.80
  4. Step 4: Simplify right side
    3,945.92x = 13,361,300.25
  5. Step 5: Solve for x
    x = 13,361,300.25/3,945.92
  6. Step 6: Final answer
    x = 3,386.11

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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.