Home / 7,916.80-11,869.26-3,911.86

Finding the Fourth Proportional to 7,916.80, 11,869.26 and 3,911.86

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Solution

The fourth proportional to 7,916.80, 11,869.26 and 3,911.86 is: 5,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.80 : 11,869.26 = 3,911.86 : x
  2. Step 2: Convert to fraction form
    7,916.80/11,869.26 = 3,911.86/x
  3. Step 3: Cross multiply
    7,916.80x = 11,869.26 × 3,911.86
  4. Step 4: Simplify right side
    7,916.80x = 46,430,883.42
  5. Step 5: Solve for x
    x = 46,430,883.42/7,916.80
  6. Step 6: Final answer
    x = 5,864.85

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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.