Home / 2,021.51-2,786.26-1,542.80

Finding the Fourth Proportional to 2,021.51, 2,786.26 and 1,542.80

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Solution

The fourth proportional to 2,021.51, 2,786.26 and 1,542.80 is: 2,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.51 : 2,786.26 = 1,542.80 : x
  2. Step 2: Convert to fraction form
    2,021.51/2,786.26 = 1,542.80/x
  3. Step 3: Cross multiply
    2,021.51x = 2,786.26 × 1,542.80
  4. Step 4: Simplify right side
    2,021.51x = 4,298,641.93
  5. Step 5: Solve for x
    x = 4,298,641.93/2,021.51
  6. Step 6: Final answer
    x = 2,126.45

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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.