Home / 7,720.26-11,580.30-1,876.86

Finding the Fourth Proportional to 7,720.26, 11,580.30 and 1,876.86

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Solution

The fourth proportional to 7,720.26, 11,580.30 and 1,876.86 is: 2,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.26 : 11,580.30 = 1,876.86 : x
  2. Step 2: Convert to fraction form
    7,720.26/11,580.30 = 1,876.86/x
  3. Step 3: Cross multiply
    7,720.26x = 11,580.30 × 1,876.86
  4. Step 4: Simplify right side
    7,720.26x = 21,734,601.86
  5. Step 5: Solve for x
    x = 21,734,601.86/7,720.26
  6. Step 6: Final answer
    x = 2,815.27

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1.5x scale

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.