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Finding the Fourth Proportional to 2,668.48, 3,995.20 and 1,416.22

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Solution

The fourth proportional to 2,668.48, 3,995.20 and 1,416.22 is: 2,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.48 : 3,995.20 = 1,416.22 : x
  2. Step 2: Convert to fraction form
    2,668.48/3,995.20 = 1,416.22/x
  3. Step 3: Cross multiply
    2,668.48x = 3,995.20 × 1,416.22
  4. Step 4: Simplify right side
    2,668.48x = 5,658,082.14
  5. Step 5: Solve for x
    x = 5,658,082.14/2,668.48
  6. Step 6: Final answer
    x = 2,120.34

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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.