Home / 3,149.40-4,346.94-1,907.80

Finding the Fourth Proportional to 3,149.40, 4,346.94 and 1,907.80

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Solution

The fourth proportional to 3,149.40, 4,346.94 and 1,907.80 is: 2,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.40 : 4,346.94 = 1,907.80 : x
  2. Step 2: Convert to fraction form
    3,149.40/4,346.94 = 1,907.80/x
  3. Step 3: Cross multiply
    3,149.40x = 4,346.94 × 1,907.80
  4. Step 4: Simplify right side
    3,149.40x = 8,293,092.13
  5. Step 5: Solve for x
    x = 8,293,092.13/3,149.40
  6. Step 6: Final answer
    x = 2,633.23

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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.