Home / 7,947.99-11,921.82-4,257.43

Finding the Fourth Proportional to 7,947.99, 11,921.82 and 4,257.43

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Solution

The fourth proportional to 7,947.99, 11,921.82 and 4,257.43 is: 6,386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.99 : 11,921.82 = 4,257.43 : x
  2. Step 2: Convert to fraction form
    7,947.99/11,921.82 = 4,257.43/x
  3. Step 3: Cross multiply
    7,947.99x = 11,921.82 × 4,257.43
  4. Step 4: Simplify right side
    7,947.99x = 50,756,268.35
  5. Step 5: Solve for x
    x = 50,756,268.35/7,947.99
  6. Step 6: Final answer
    x = 6,386.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.