Home / 3,891.08-5,368.40-2,212.32

Finding the Fourth Proportional to 3,891.08, 5,368.40 and 2,212.32

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Solution

The fourth proportional to 3,891.08, 5,368.40 and 2,212.32 is: 3,052.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.08 : 5,368.40 = 2,212.32 : x
  2. Step 2: Convert to fraction form
    3,891.08/5,368.40 = 2,212.32/x
  3. Step 3: Cross multiply
    3,891.08x = 5,368.40 × 2,212.32
  4. Step 4: Simplify right side
    3,891.08x = 11,876,618.69
  5. Step 5: Solve for x
    x = 11,876,618.69/3,891.08
  6. Step 6: Final answer
    x = 3,052.27

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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.