Home / 5,216.40-7,198.56-2,858.40

Finding the Fourth Proportional to 5,216.40, 7,198.56 and 2,858.40

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Solution

The fourth proportional to 5,216.40, 7,198.56 and 2,858.40 is: 3,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.40 : 7,198.56 = 2,858.40 : x
  2. Step 2: Convert to fraction form
    5,216.40/7,198.56 = 2,858.40/x
  3. Step 3: Cross multiply
    5,216.40x = 7,198.56 × 2,858.40
  4. Step 4: Simplify right side
    5,216.40x = 20,576,363.90
  5. Step 5: Solve for x
    x = 20,576,363.90/5,216.40
  6. Step 6: Final answer
    x = 3,944.55

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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.