Home / 5,816.75-8,728.79-2,118.60

Finding the Fourth Proportional to 5,816.75, 8,728.79 and 2,118.60

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Solution

The fourth proportional to 5,816.75, 8,728.79 and 2,118.60 is: 3,179.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816.75 : 8,728.79 = 2,118.60 : x
  2. Step 2: Convert to fraction form
    5,816.75/8,728.79 = 2,118.60/x
  3. Step 3: Cross multiply
    5,816.75x = 8,728.79 × 2,118.60
  4. Step 4: Simplify right side
    5,816.75x = 18,492,803.90
  5. Step 5: Solve for x
    x = 18,492,803.90/5,816.75
  6. Step 6: Final answer
    x = 3,179.24

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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.