Home / 2,780.53-4,176.16-2,668.34

Finding the Fourth Proportional to 2,780.53, 4,176.16 and 2,668.34

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Solution

The fourth proportional to 2,780.53, 4,176.16 and 2,668.34 is: 4,007.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.53 : 4,176.16 = 2,668.34 : x
  2. Step 2: Convert to fraction form
    2,780.53/4,176.16 = 2,668.34/x
  3. Step 3: Cross multiply
    2,780.53x = 4,176.16 × 2,668.34
  4. Step 4: Simplify right side
    2,780.53x = 11,143,418.54
  5. Step 5: Solve for x
    x = 11,143,418.54/2,780.53
  6. Step 6: Final answer
    x = 4,007.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.