Home / 5,215.87-7,197.94-2,858.01

Finding the Fourth Proportional to 5,215.87, 7,197.94 and 2,858.01

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Solution

The fourth proportional to 5,215.87, 7,197.94 and 2,858.01 is: 3,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.87 : 7,197.94 = 2,858.01 : x
  2. Step 2: Convert to fraction form
    5,215.87/7,197.94 = 2,858.01/x
  3. Step 3: Cross multiply
    5,215.87x = 7,197.94 × 2,858.01
  4. Step 4: Simplify right side
    5,215.87x = 20,571,784.50
  5. Step 5: Solve for x
    x = 20,571,784.50/5,215.87
  6. Step 6: Final answer
    x = 3,944.08

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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.