Home / 5,216.61-7,198.87-2,858.70

Finding the Fourth Proportional to 5,216.61, 7,198.87 and 2,858.70

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Solution

The fourth proportional to 5,216.61, 7,198.87 and 2,858.70 is: 3,944.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.61 : 7,198.87 = 2,858.70 : x
  2. Step 2: Convert to fraction form
    5,216.61/7,198.87 = 2,858.70/x
  3. Step 3: Cross multiply
    5,216.61x = 7,198.87 × 2,858.70
  4. Step 4: Simplify right side
    5,216.61x = 20,579,409.67
  5. Step 5: Solve for x
    x = 20,579,409.67/5,216.61
  6. Step 6: Final answer
    x = 3,944.98

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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.