Home / 8,719.58-13,080-2,876.78

Finding the Fourth Proportional to 8,719.58, 13,080 and 2,876.78

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Solution

The fourth proportional to 8,719.58, 13,080 and 2,876.78 is: 4,315.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.58 : 13,080 = 2,876.78 : x
  2. Step 2: Convert to fraction form
    8,719.58/13,080 = 2,876.78/x
  3. Step 3: Cross multiply
    8,719.58x = 13,080 × 2,876.78
  4. Step 4: Simplify right side
    8,719.58x = 37,628,282.40
  5. Step 5: Solve for x
    x = 37,628,282.40/8,719.58
  6. Step 6: Final answer
    x = 4,315.38

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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.