Home / 5,231.25-7,219.09-2,841.20

Finding the Fourth Proportional to 5,231.25, 7,219.09 and 2,841.20

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Solution

The fourth proportional to 5,231.25, 7,219.09 and 2,841.20 is: 3,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.25 : 7,219.09 = 2,841.20 : x
  2. Step 2: Convert to fraction form
    5,231.25/7,219.09 = 2,841.20/x
  3. Step 3: Cross multiply
    5,231.25x = 7,219.09 × 2,841.20
  4. Step 4: Simplify right side
    5,231.25x = 20,510,878.51
  5. Step 5: Solve for x
    x = 20,510,878.51/5,231.25
  6. Step 6: Final answer
    x = 3,920.84

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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.