Home / 7,777.28-11,659.31-3,619.70

Finding the Fourth Proportional to 7,777.28, 11,659.31 and 3,619.70

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Solution

The fourth proportional to 7,777.28, 11,659.31 and 3,619.70 is: 5,426.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.28 : 11,659.31 = 3,619.70 : x
  2. Step 2: Convert to fraction form
    7,777.28/11,659.31 = 3,619.70/x
  3. Step 3: Cross multiply
    7,777.28x = 11,659.31 × 3,619.70
  4. Step 4: Simplify right side
    7,777.28x = 42,203,242.60
  5. Step 5: Solve for x
    x = 42,203,242.60/7,777.28
  6. Step 6: Final answer
    x = 5,426.48

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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.