Home / 7,780.52-11,672.70-2,586.44

Finding the Fourth Proportional to 7,780.52, 11,672.70 and 2,586.44

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Solution

The fourth proportional to 7,780.52, 11,672.70 and 2,586.44 is: 3,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.52 : 11,672.70 = 2,586.44 : x
  2. Step 2: Convert to fraction form
    7,780.52/11,672.70 = 2,586.44/x
  3. Step 3: Cross multiply
    7,780.52x = 11,672.70 × 2,586.44
  4. Step 4: Simplify right side
    7,780.52x = 30,190,738.19
  5. Step 5: Solve for x
    x = 30,190,738.19/7,780.52
  6. Step 6: Final answer
    x = 3,880.30

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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.