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Finding the Fourth Proportional to 3,478.13, 5,216.73 and 1,256.73

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Solution

The fourth proportional to 3,478.13, 5,216.73 and 1,256.73 is: 1,884.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.13 : 5,216.73 = 1,256.73 : x
  2. Step 2: Convert to fraction form
    3,478.13/5,216.73 = 1,256.73/x
  3. Step 3: Cross multiply
    3,478.13x = 5,216.73 × 1,256.73
  4. Step 4: Simplify right side
    3,478.13x = 6,556,021.09
  5. Step 5: Solve for x
    x = 6,556,021.09/3,478.13
  6. Step 6: Final answer
    x = 1,884.93

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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.