Home / 2,021.39-2,786.09-1,542.68

Finding the Fourth Proportional to 2,021.39, 2,786.09 and 1,542.68

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Solution

The fourth proportional to 2,021.39, 2,786.09 and 1,542.68 is: 2,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.39 : 2,786.09 = 1,542.68 : x
  2. Step 2: Convert to fraction form
    2,021.39/2,786.09 = 1,542.68/x
  3. Step 3: Cross multiply
    2,021.39x = 2,786.09 × 1,542.68
  4. Step 4: Simplify right side
    2,021.39x = 4,298,023.68
  5. Step 5: Solve for x
    x = 4,298,023.68/2,021.39
  6. Step 6: Final answer
    x = 2,126.28

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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.