Home / 7,719.98-11,579.86-1,876.57

Finding the Fourth Proportional to 7,719.98, 11,579.86 and 1,876.57

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Solution

The fourth proportional to 7,719.98, 11,579.86 and 1,876.57 is: 2,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.98 : 11,579.86 = 1,876.57 : x
  2. Step 2: Convert to fraction form
    7,719.98/11,579.86 = 1,876.57/x
  3. Step 3: Cross multiply
    7,719.98x = 11,579.86 × 1,876.57
  4. Step 4: Simplify right side
    7,719.98x = 21,730,417.88
  5. Step 5: Solve for x
    x = 21,730,417.88/7,719.98
  6. Step 6: Final answer
    x = 2,814.83

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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.