Home / 2,668.98-4,005.36-2,155.20

Finding the Fourth Proportional to 2,668.98, 4,005.36 and 2,155.20

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Solution

The fourth proportional to 2,668.98, 4,005.36 and 2,155.20 is: 3,234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.98 : 4,005.36 = 2,155.20 : x
  2. Step 2: Convert to fraction form
    2,668.98/4,005.36 = 2,155.20/x
  3. Step 3: Cross multiply
    2,668.98x = 4,005.36 × 2,155.20
  4. Step 4: Simplify right side
    2,668.98x = 8,632,351.87
  5. Step 5: Solve for x
    x = 8,632,351.87/2,668.98
  6. Step 6: Final answer
    x = 3,234.33

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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.