Home / 7,873.13-11,811.51-2,679

Finding the Fourth Proportional to 7,873.13, 11,811.51 and 2,679

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Solution

The fourth proportional to 7,873.13, 11,811.51 and 2,679 is: 4,019.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.13 : 11,811.51 = 2,679 : x
  2. Step 2: Convert to fraction form
    7,873.13/11,811.51 = 2,679/x
  3. Step 3: Cross multiply
    7,873.13x = 11,811.51 × 2,679
  4. Step 4: Simplify right side
    7,873.13x = 31,643,035.29
  5. Step 5: Solve for x
    x = 31,643,035.29/7,873.13
  6. Step 6: Final answer
    x = 4,019.12

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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.