Home / 7,877.91-11,818.70-2,683.78

Finding the Fourth Proportional to 7,877.91, 11,818.70 and 2,683.78

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Solution

The fourth proportional to 7,877.91, 11,818.70 and 2,683.78 is: 4,026.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.91 : 11,818.70 = 2,683.78 : x
  2. Step 2: Convert to fraction form
    7,877.91/11,818.70 = 2,683.78/x
  3. Step 3: Cross multiply
    7,877.91x = 11,818.70 × 2,683.78
  4. Step 4: Simplify right side
    7,877.91x = 31,718,790.69
  5. Step 5: Solve for x
    x = 31,718,790.69/7,877.91
  6. Step 6: Final answer
    x = 4,026.30

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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.