Home / 2,199.33-3,034.80-1,290.92

Finding the Fourth Proportional to 2,199.33, 3,034.80 and 1,290.92

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Solution

The fourth proportional to 2,199.33, 3,034.80 and 1,290.92 is: 1,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.33 : 3,034.80 = 1,290.92 : x
  2. Step 2: Convert to fraction form
    2,199.33/3,034.80 = 1,290.92/x
  3. Step 3: Cross multiply
    2,199.33x = 3,034.80 × 1,290.92
  4. Step 4: Simplify right side
    2,199.33x = 3,917,668.84
  5. Step 5: Solve for x
    x = 3,917,668.84/2,199.33
  6. Step 6: Final answer
    x = 1,781.30

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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.