Home / 5,715.14-8,580.64-2,943.78

Finding the Fourth Proportional to 5,715.14, 8,580.64 and 2,943.78

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Solution

The fourth proportional to 5,715.14, 8,580.64 and 2,943.78 is: 4,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.14 : 8,580.64 = 2,943.78 : x
  2. Step 2: Convert to fraction form
    5,715.14/8,580.64 = 2,943.78/x
  3. Step 3: Cross multiply
    5,715.14x = 8,580.64 × 2,943.78
  4. Step 4: Simplify right side
    5,715.14x = 25,259,516.42
  5. Step 5: Solve for x
    x = 25,259,516.42/5,715.14
  6. Step 6: Final answer
    x = 4,419.75

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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.