Home / 3,172.93-4,378.87-1,914.29

Finding the Fourth Proportional to 3,172.93, 4,378.87 and 1,914.29

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Solution

The fourth proportional to 3,172.93, 4,378.87 and 1,914.29 is: 2,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.93 : 4,378.87 = 1,914.29 : x
  2. Step 2: Convert to fraction form
    3,172.93/4,378.87 = 1,914.29/x
  3. Step 3: Cross multiply
    3,172.93x = 4,378.87 × 1,914.29
  4. Step 4: Simplify right side
    3,172.93x = 8,382,400.37
  5. Step 5: Solve for x
    x = 8,382,400.37/3,172.93
  6. Step 6: Final answer
    x = 2,641.85

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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.