Home / 2,143.69-3,216.07-845.26

Finding the Fourth Proportional to 2,143.69, 3,216.07 and 845.26

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Solution

The fourth proportional to 2,143.69, 3,216.07 and 845.26 is: 1,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.69 : 3,216.07 = 845.26 : x
  2. Step 2: Convert to fraction form
    2,143.69/3,216.07 = 845.26/x
  3. Step 3: Cross multiply
    2,143.69x = 3,216.07 × 845.26
  4. Step 4: Simplify right side
    2,143.69x = 2,718,415.33
  5. Step 5: Solve for x
    x = 2,718,415.33/2,143.69
  6. Step 6: Final answer
    x = 1,268.10

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1.5x scale

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.