Home / 8,621.88-11,898.32-5,085.09

Finding the Fourth Proportional to 8,621.88, 11,898.32 and 5,085.09

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Solution

The fourth proportional to 8,621.88, 11,898.32 and 5,085.09 is: 7,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.88 : 11,898.32 = 5,085.09 : x
  2. Step 2: Convert to fraction form
    8,621.88/11,898.32 = 5,085.09/x
  3. Step 3: Cross multiply
    8,621.88x = 11,898.32 × 5,085.09
  4. Step 4: Simplify right side
    8,621.88x = 60,504,028.05
  5. Step 5: Solve for x
    x = 60,504,028.05/8,621.88
  6. Step 6: Final answer
    x = 7,017.50

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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.