Home / 7,818.29-11,725.15-3,136.79

Finding the Fourth Proportional to 7,818.29, 11,725.15 and 3,136.79

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Solution

The fourth proportional to 7,818.29, 11,725.15 and 3,136.79 is: 4,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.29 : 11,725.15 = 3,136.79 : x
  2. Step 2: Convert to fraction form
    7,818.29/11,725.15 = 3,136.79/x
  3. Step 3: Cross multiply
    7,818.29x = 11,725.15 × 3,136.79
  4. Step 4: Simplify right side
    7,818.29x = 36,779,333.27
  5. Step 5: Solve for x
    x = 36,779,333.27/7,818.29
  6. Step 6: Final answer
    x = 4,704.27

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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.