Home / 7,811.81-11,715.30-2,265.56

Finding the Fourth Proportional to 7,811.81, 11,715.30 and 2,265.56

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Solution

The fourth proportional to 7,811.81, 11,715.30 and 2,265.56 is: 3,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.81 : 11,715.30 = 2,265.56 : x
  2. Step 2: Convert to fraction form
    7,811.81/11,715.30 = 2,265.56/x
  3. Step 3: Cross multiply
    7,811.81x = 11,715.30 × 2,265.56
  4. Step 4: Simplify right side
    7,811.81x = 26,541,748.60
  5. Step 5: Solve for x
    x = 26,541,748.60/7,811.81
  6. Step 6: Final answer
    x = 3,397.64

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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.