Home / 5,131.54-7,079.21-3,141.30

Finding the Fourth Proportional to 5,131.54, 7,079.21 and 3,141.30

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Solution

The fourth proportional to 5,131.54, 7,079.21 and 3,141.30 is: 4,333.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.54 : 7,079.21 = 3,141.30 : x
  2. Step 2: Convert to fraction form
    5,131.54/7,079.21 = 3,141.30/x
  3. Step 3: Cross multiply
    5,131.54x = 7,079.21 × 3,141.30
  4. Step 4: Simplify right side
    5,131.54x = 22,237,922.37
  5. Step 5: Solve for x
    x = 22,237,922.37/5,131.54
  6. Step 6: Final answer
    x = 4,333.58

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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.