Home / 2,668.38-3,680.74-1,722.66

Finding the Fourth Proportional to 2,668.38, 3,680.74 and 1,722.66

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Solution

The fourth proportional to 2,668.38, 3,680.74 and 1,722.66 is: 2,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.38 : 3,680.74 = 1,722.66 : x
  2. Step 2: Convert to fraction form
    2,668.38/3,680.74 = 1,722.66/x
  3. Step 3: Cross multiply
    2,668.38x = 3,680.74 × 1,722.66
  4. Step 4: Simplify right side
    2,668.38x = 6,340,663.57
  5. Step 5: Solve for x
    x = 6,340,663.57/2,668.38
  6. Step 6: Final answer
    x = 2,376.22

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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.