Home / 2,776.62-4,148.07-1,990.38

Finding the Fourth Proportional to 2,776.62, 4,148.07 and 1,990.38

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Solution

The fourth proportional to 2,776.62, 4,148.07 and 1,990.38 is: 2,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.62 : 4,148.07 = 1,990.38 : x
  2. Step 2: Convert to fraction form
    2,776.62/4,148.07 = 1,990.38/x
  3. Step 3: Cross multiply
    2,776.62x = 4,148.07 × 1,990.38
  4. Step 4: Simplify right side
    2,776.62x = 8,256,235.57
  5. Step 5: Solve for x
    x = 8,256,235.57/2,776.62
  6. Step 6: Final answer
    x = 2,973.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.