Home / 3,149.46-4,345.80-1,890.25

Finding the Fourth Proportional to 3,149.46, 4,345.80 and 1,890.25

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Solution

The fourth proportional to 3,149.46, 4,345.80 and 1,890.25 is: 2,608.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.46 : 4,345.80 = 1,890.25 : x
  2. Step 2: Convert to fraction form
    3,149.46/4,345.80 = 1,890.25/x
  3. Step 3: Cross multiply
    3,149.46x = 4,345.80 × 1,890.25
  4. Step 4: Simplify right side
    3,149.46x = 8,214,630.50
  5. Step 5: Solve for x
    x = 8,214,630.50/3,149.46
  6. Step 6: Final answer
    x = 2,608.27

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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.