Home / 5,816.80-8,025.60-3,719.20

Finding the Fourth Proportional to 5,816.80, 8,025.60 and 3,719.20

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Solution

The fourth proportional to 5,816.80, 8,025.60 and 3,719.20 is: 5,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816.80 : 8,025.60 = 3,719.20 : x
  2. Step 2: Convert to fraction form
    5,816.80/8,025.60 = 3,719.20/x
  3. Step 3: Cross multiply
    5,816.80x = 8,025.60 × 3,719.20
  4. Step 4: Simplify right side
    5,816.80x = 29,848,811.52
  5. Step 5: Solve for x
    x = 29,848,811.52/5,816.80
  6. Step 6: Final answer
    x = 5,131.48

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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.