Home / 3,945.77-5,445.12-2,177.33

Finding the Fourth Proportional to 3,945.77, 5,445.12 and 2,177.33

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Solution

The fourth proportional to 3,945.77, 5,445.12 and 2,177.33 is: 3,004.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.77 : 5,445.12 = 2,177.33 : x
  2. Step 2: Convert to fraction form
    3,945.77/5,445.12 = 2,177.33/x
  3. Step 3: Cross multiply
    3,945.77x = 5,445.12 × 2,177.33
  4. Step 4: Simplify right side
    3,945.77x = 11,855,823.13
  5. Step 5: Solve for x
    x = 11,855,823.13/3,945.77
  6. Step 6: Final answer
    x = 3,004.69

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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.