Home / 2,945.51-4,418.13-865.43

Finding the Fourth Proportional to 2,945.51, 4,418.13 and 865.43

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Solution

The fourth proportional to 2,945.51, 4,418.13 and 865.43 is: 1,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.51 : 4,418.13 = 865.43 : x
  2. Step 2: Convert to fraction form
    2,945.51/4,418.13 = 865.43/x
  3. Step 3: Cross multiply
    2,945.51x = 4,418.13 × 865.43
  4. Step 4: Simplify right side
    2,945.51x = 3,823,582.25
  5. Step 5: Solve for x
    x = 3,823,582.25/2,945.51
  6. Step 6: Final answer
    x = 1,298.11

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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.