Home / 2,845.09-3,926.37-2,145.25

Finding the Fourth Proportional to 2,845.09, 3,926.37 and 2,145.25

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Solution

The fourth proportional to 2,845.09, 3,926.37 and 2,145.25 is: 2,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.09 : 3,926.37 = 2,145.25 : x
  2. Step 2: Convert to fraction form
    2,845.09/3,926.37 = 2,145.25/x
  3. Step 3: Cross multiply
    2,845.09x = 3,926.37 × 2,145.25
  4. Step 4: Simplify right side
    2,845.09x = 8,423,045.24
  5. Step 5: Solve for x
    x = 8,423,045.24/2,845.09
  6. Step 6: Final answer
    x = 2,960.55

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Double scale
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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.