Home / 5,719.79-8,580.78-2,021.60

Finding the Fourth Proportional to 5,719.79, 8,580.78 and 2,021.60

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Solution

The fourth proportional to 5,719.79, 8,580.78 and 2,021.60 is: 3,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.79 : 8,580.78 = 2,021.60 : x
  2. Step 2: Convert to fraction form
    5,719.79/8,580.78 = 2,021.60/x
  3. Step 3: Cross multiply
    5,719.79x = 8,580.78 × 2,021.60
  4. Step 4: Simplify right side
    5,719.79x = 17,346,904.85
  5. Step 5: Solve for x
    x = 17,346,904.85/5,719.79
  6. Step 6: Final answer
    x = 3,032.79

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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.