Home / 7,621.87-11,435.40-4,112.21

Finding the Fourth Proportional to 7,621.87, 11,435.40 and 4,112.21

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Solution

The fourth proportional to 7,621.87, 11,435.40 and 4,112.21 is: 6,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.87 : 11,435.40 = 4,112.21 : x
  2. Step 2: Convert to fraction form
    7,621.87/11,435.40 = 4,112.21/x
  3. Step 3: Cross multiply
    7,621.87x = 11,435.40 × 4,112.21
  4. Step 4: Simplify right side
    7,621.87x = 47,024,766.23
  5. Step 5: Solve for x
    x = 47,024,766.23/7,621.87
  6. Step 6: Final answer
    x = 6,169.72

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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.