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Finding the Fourth Proportional to 7,876.86, 11,815.30 and 7,395.72

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Solution

The fourth proportional to 7,876.86, 11,815.30 and 7,395.72 is: 11,093.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.86 : 11,815.30 = 7,395.72 : x
  2. Step 2: Convert to fraction form
    7,876.86/11,815.30 = 7,395.72/x
  3. Step 3: Cross multiply
    7,876.86x = 11,815.30 × 7,395.72
  4. Step 4: Simplify right side
    7,876.86x = 87,382,650.52
  5. Step 5: Solve for x
    x = 87,382,650.52/7,876.86
  6. Step 6: Final answer
    x = 11,093.59

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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.