Home / 2,975.15-4,105.80-1,648.91

Finding the Fourth Proportional to 2,975.15, 4,105.80 and 1,648.91

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Solution

The fourth proportional to 2,975.15, 4,105.80 and 1,648.91 is: 2,275.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.15 : 4,105.80 = 1,648.91 : x
  2. Step 2: Convert to fraction form
    2,975.15/4,105.80 = 1,648.91/x
  3. Step 3: Cross multiply
    2,975.15x = 4,105.80 × 1,648.91
  4. Step 4: Simplify right side
    2,975.15x = 6,770,074.15
  5. Step 5: Solve for x
    x = 6,770,074.15/2,975.15
  6. Step 6: Final answer
    x = 2,275.54

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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.