Home / 7,720.35-11,580.42-1,876.96

Finding the Fourth Proportional to 7,720.35, 11,580.42 and 1,876.96

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Solution

The fourth proportional to 7,720.35, 11,580.42 and 1,876.96 is: 2,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.35 : 11,580.42 = 1,876.96 : x
  2. Step 2: Convert to fraction form
    7,720.35/11,580.42 = 1,876.96/x
  3. Step 3: Cross multiply
    7,720.35x = 11,580.42 × 1,876.96
  4. Step 4: Simplify right side
    7,720.35x = 21,735,985.12
  5. Step 5: Solve for x
    x = 21,735,985.12/7,720.35
  6. Step 6: Final answer
    x = 2,815.42

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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.