Home / 6,112.80-8,431.56-3,751.92

Finding the Fourth Proportional to 6,112.80, 8,431.56 and 3,751.92

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Solution

The fourth proportional to 6,112.80, 8,431.56 and 3,751.92 is: 5,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.80 : 8,431.56 = 3,751.92 : x
  2. Step 2: Convert to fraction form
    6,112.80/8,431.56 = 3,751.92/x
  3. Step 3: Cross multiply
    6,112.80x = 8,431.56 × 3,751.92
  4. Step 4: Simplify right side
    6,112.80x = 31,634,538.60
  5. Step 5: Solve for x
    x = 31,634,538.60/6,112.80
  6. Step 6: Final answer
    x = 5,175.13

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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.