Home / 3,778.81-5,668.20-1,146.31

Finding the Fourth Proportional to 3,778.81, 5,668.20 and 1,146.31

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Solution

The fourth proportional to 3,778.81, 5,668.20 and 1,146.31 is: 1,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.81 : 5,668.20 = 1,146.31 : x
  2. Step 2: Convert to fraction form
    3,778.81/5,668.20 = 1,146.31/x
  3. Step 3: Cross multiply
    3,778.81x = 5,668.20 × 1,146.31
  4. Step 4: Simplify right side
    3,778.81x = 6,497,514.34
  5. Step 5: Solve for x
    x = 6,497,514.34/3,778.81
  6. Step 6: Final answer
    x = 1,719.46

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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.