Home / 5,215.88-7,198.08-2,858.20

Finding the Fourth Proportional to 5,215.88, 7,198.08 and 2,858.20

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Solution

The fourth proportional to 5,215.88, 7,198.08 and 2,858.20 is: 3,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.88 : 7,198.08 = 2,858.20 : x
  2. Step 2: Convert to fraction form
    5,215.88/7,198.08 = 2,858.20/x
  3. Step 3: Cross multiply
    5,215.88x = 7,198.08 × 2,858.20
  4. Step 4: Simplify right side
    5,215.88x = 20,573,552.26
  5. Step 5: Solve for x
    x = 20,573,552.26/5,215.88
  6. Step 6: Final answer
    x = 3,944.41

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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.