Home / 9,219.87-12,723.43-5,028.12

Finding the Fourth Proportional to 9,219.87, 12,723.43 and 5,028.12

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Solution

The fourth proportional to 9,219.87, 12,723.43 and 5,028.12 is: 6,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.87 : 12,723.43 = 5,028.12 : x
  2. Step 2: Convert to fraction form
    9,219.87/12,723.43 = 5,028.12/x
  3. Step 3: Cross multiply
    9,219.87x = 12,723.43 × 5,028.12
  4. Step 4: Simplify right side
    9,219.87x = 63,974,893.92
  5. Step 5: Solve for x
    x = 63,974,893.92/9,219.87
  6. Step 6: Final answer
    x = 6,938.81

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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.