Home / 7,858.36-11,788.28-2,311.70

Finding the Fourth Proportional to 7,858.36, 11,788.28 and 2,311.70

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Solution

The fourth proportional to 7,858.36, 11,788.28 and 2,311.70 is: 3,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.36 : 11,788.28 = 2,311.70 : x
  2. Step 2: Convert to fraction form
    7,858.36/11,788.28 = 2,311.70/x
  3. Step 3: Cross multiply
    7,858.36x = 11,788.28 × 2,311.70
  4. Step 4: Simplify right side
    7,858.36x = 27,250,966.88
  5. Step 5: Solve for x
    x = 27,250,966.88/7,858.36
  6. Step 6: Final answer
    x = 3,467.77

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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.