Home / 7,685.11-11,509.18-4,388.21

Finding the Fourth Proportional to 7,685.11, 11,509.18 and 4,388.21

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Solution

The fourth proportional to 7,685.11, 11,509.18 and 4,388.21 is: 6,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.11 : 11,509.18 = 4,388.21 : x
  2. Step 2: Convert to fraction form
    7,685.11/11,509.18 = 4,388.21/x
  3. Step 3: Cross multiply
    7,685.11x = 11,509.18 × 4,388.21
  4. Step 4: Simplify right side
    7,685.11x = 50,504,659.02
  5. Step 5: Solve for x
    x = 50,504,659.02/7,685.11
  6. Step 6: Final answer
    x = 6,571.75

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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.