Home / 3,945.51-5,445.09-2,266.92

Finding the Fourth Proportional to 3,945.51, 5,445.09 and 2,266.92

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Solution

The fourth proportional to 3,945.51, 5,445.09 and 2,266.92 is: 3,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.51 : 5,445.09 = 2,266.92 : x
  2. Step 2: Convert to fraction form
    3,945.51/5,445.09 = 2,266.92/x
  3. Step 3: Cross multiply
    3,945.51x = 5,445.09 × 2,266.92
  4. Step 4: Simplify right side
    3,945.51x = 12,343,583.42
  5. Step 5: Solve for x
    x = 12,343,583.42/3,945.51
  6. Step 6: Final answer
    x = 3,128.51

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Double scale
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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.