Home / 3,149.39-4,346.27-1,805.21

Finding the Fourth Proportional to 3,149.39, 4,346.27 and 1,805.21

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Solution

The fourth proportional to 3,149.39, 4,346.27 and 1,805.21 is: 2,491.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.39 : 4,346.27 = 1,805.21 : x
  2. Step 2: Convert to fraction form
    3,149.39/4,346.27 = 1,805.21/x
  3. Step 3: Cross multiply
    3,149.39x = 4,346.27 × 1,805.21
  4. Step 4: Simplify right side
    3,149.39x = 7,845,930.07
  5. Step 5: Solve for x
    x = 7,845,930.07/3,149.39
  6. Step 6: Final answer
    x = 2,491.25

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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.