Home / 6,415.82-9,621.80-2,255.05

Finding the Fourth Proportional to 6,415.82, 9,621.80 and 2,255.05

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Solution

The fourth proportional to 6,415.82, 9,621.80 and 2,255.05 is: 3,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.82 : 9,621.80 = 2,255.05 : x
  2. Step 2: Convert to fraction form
    6,415.82/9,621.80 = 2,255.05/x
  3. Step 3: Cross multiply
    6,415.82x = 9,621.80 × 2,255.05
  4. Step 4: Simplify right side
    6,415.82x = 21,697,640.09
  5. Step 5: Solve for x
    x = 21,697,640.09/6,415.82
  6. Step 6: Final answer
    x = 3,381.90

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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.