Home / 7,811.69-11,719.10-2,881.35

Finding the Fourth Proportional to 7,811.69, 11,719.10 and 2,881.35

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Solution

The fourth proportional to 7,811.69, 11,719.10 and 2,881.35 is: 4,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.69 : 11,719.10 = 2,881.35 : x
  2. Step 2: Convert to fraction form
    7,811.69/11,719.10 = 2,881.35/x
  3. Step 3: Cross multiply
    7,811.69x = 11,719.10 × 2,881.35
  4. Step 4: Simplify right side
    7,811.69x = 33,766,814.38
  5. Step 5: Solve for x
    x = 33,766,814.38/7,811.69
  6. Step 6: Final answer
    x = 4,322.60

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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.