Home / 7,816.58-11,719.40-3,918.86

Finding the Fourth Proportional to 7,816.58, 11,719.40 and 3,918.86

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Solution

The fourth proportional to 7,816.58, 11,719.40 and 3,918.86 is: 5,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.58 : 11,719.40 = 3,918.86 : x
  2. Step 2: Convert to fraction form
    7,816.58/11,719.40 = 3,918.86/x
  3. Step 3: Cross multiply
    7,816.58x = 11,719.40 × 3,918.86
  4. Step 4: Simplify right side
    7,816.58x = 45,926,687.88
  5. Step 5: Solve for x
    x = 45,926,687.88/7,816.58
  6. Step 6: Final answer
    x = 5,875.55

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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.