Home / 7,665.86-11,498.70-2,119.26

Finding the Fourth Proportional to 7,665.86, 11,498.70 and 2,119.26

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Solution

The fourth proportional to 7,665.86, 11,498.70 and 2,119.26 is: 3,178.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.86 : 11,498.70 = 2,119.26 : x
  2. Step 2: Convert to fraction form
    7,665.86/11,498.70 = 2,119.26/x
  3. Step 3: Cross multiply
    7,665.86x = 11,498.70 × 2,119.26
  4. Step 4: Simplify right side
    7,665.86x = 24,368,734.96
  5. Step 5: Solve for x
    x = 24,368,734.96/7,665.86
  6. Step 6: Final answer
    x = 3,178.87

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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.