Home / 7,775.28-11,665.44-2,581.92

Finding the Fourth Proportional to 7,775.28, 11,665.44 and 2,581.92

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Solution

The fourth proportional to 7,775.28, 11,665.44 and 2,581.92 is: 3,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.28 : 11,665.44 = 2,581.92 : x
  2. Step 2: Convert to fraction form
    7,775.28/11,665.44 = 2,581.92/x
  3. Step 3: Cross multiply
    7,775.28x = 11,665.44 × 2,581.92
  4. Step 4: Simplify right side
    7,775.28x = 30,119,232.84
  5. Step 5: Solve for x
    x = 30,119,232.84/7,775.28
  6. Step 6: Final answer
    x = 3,873.72

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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.