Home / 5,205.13-7,180.16-3,214.28

Finding the Fourth Proportional to 5,205.13, 7,180.16 and 3,214.28

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Solution

The fourth proportional to 5,205.13, 7,180.16 and 3,214.28 is: 4,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.13 : 7,180.16 = 3,214.28 : x
  2. Step 2: Convert to fraction form
    5,205.13/7,180.16 = 3,214.28/x
  3. Step 3: Cross multiply
    5,205.13x = 7,180.16 × 3,214.28
  4. Step 4: Simplify right side
    5,205.13x = 23,079,046.56
  5. Step 5: Solve for x
    x = 23,079,046.56/5,205.13
  6. Step 6: Final answer
    x = 4,433.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.