Home / 7,720.12-10,653.72-4,183.32

Finding the Fourth Proportional to 7,720.12, 10,653.72 and 4,183.32

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Solution

The fourth proportional to 7,720.12, 10,653.72 and 4,183.32 is: 5,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.12 : 10,653.72 = 4,183.32 : x
  2. Step 2: Convert to fraction form
    7,720.12/10,653.72 = 4,183.32/x
  3. Step 3: Cross multiply
    7,720.12x = 10,653.72 × 4,183.32
  4. Step 4: Simplify right side
    7,720.12x = 44,567,919.95
  5. Step 5: Solve for x
    x = 44,567,919.95/7,720.12
  6. Step 6: Final answer
    x = 5,772.96

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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.