Home / 3,642.90-5,021.37-2,855.58

Finding the Fourth Proportional to 3,642.90, 5,021.37 and 2,855.58

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Solution

The fourth proportional to 3,642.90, 5,021.37 and 2,855.58 is: 3,936.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.90 : 5,021.37 = 2,855.58 : x
  2. Step 2: Convert to fraction form
    3,642.90/5,021.37 = 2,855.58/x
  3. Step 3: Cross multiply
    3,642.90x = 5,021.37 × 2,855.58
  4. Step 4: Simplify right side
    3,642.90x = 14,338,923.74
  5. Step 5: Solve for x
    x = 14,338,923.74/3,642.90
  6. Step 6: Final answer
    x = 3,936.13

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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.