Home / 3,147.80-4,338.60-2,696.42

Finding the Fourth Proportional to 3,147.80, 4,338.60 and 2,696.42

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Solution

The fourth proportional to 3,147.80, 4,338.60 and 2,696.42 is: 3,716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.80 : 4,338.60 = 2,696.42 : x
  2. Step 2: Convert to fraction form
    3,147.80/4,338.60 = 2,696.42/x
  3. Step 3: Cross multiply
    3,147.80x = 4,338.60 × 2,696.42
  4. Step 4: Simplify right side
    3,147.80x = 11,698,666.12
  5. Step 5: Solve for x
    x = 11,698,666.12/3,147.80
  6. Step 6: Final answer
    x = 3,716.46

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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.