Home / 3,474.48-5,236.13-3,128.21

Finding the Fourth Proportional to 3,474.48, 5,236.13 and 3,128.21

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Solution

The fourth proportional to 3,474.48, 5,236.13 and 3,128.21 is: 4,714.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.48 : 5,236.13 = 3,128.21 : x
  2. Step 2: Convert to fraction form
    3,474.48/5,236.13 = 3,128.21/x
  3. Step 3: Cross multiply
    3,474.48x = 5,236.13 × 3,128.21
  4. Step 4: Simplify right side
    3,474.48x = 16,379,714.23
  5. Step 5: Solve for x
    x = 16,379,714.23/3,474.48
  6. Step 6: Final answer
    x = 4,714.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.