Home / 2,379.80-3,280.35-1,906.16

Finding the Fourth Proportional to 2,379.80, 3,280.35 and 1,906.16

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Solution

The fourth proportional to 2,379.80, 3,280.35 and 1,906.16 is: 2,627.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.80 : 3,280.35 = 1,906.16 : x
  2. Step 2: Convert to fraction form
    2,379.80/3,280.35 = 1,906.16/x
  3. Step 3: Cross multiply
    2,379.80x = 3,280.35 × 1,906.16
  4. Step 4: Simplify right side
    2,379.80x = 6,252,871.96
  5. Step 5: Solve for x
    x = 6,252,871.96/2,379.80
  6. Step 6: Final answer
    x = 2,627.48

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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.