Home / 5,719.20-7,892.12-3,200.88

Finding the Fourth Proportional to 5,719.20, 7,892.12 and 3,200.88

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Solution

The fourth proportional to 5,719.20, 7,892.12 and 3,200.88 is: 4,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.20 : 7,892.12 = 3,200.88 : x
  2. Step 2: Convert to fraction form
    5,719.20/7,892.12 = 3,200.88/x
  3. Step 3: Cross multiply
    5,719.20x = 7,892.12 × 3,200.88
  4. Step 4: Simplify right side
    5,719.20x = 25,261,750.93
  5. Step 5: Solve for x
    x = 25,261,750.93/5,719.20
  6. Step 6: Final answer
    x = 4,417.01

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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.