Home / 7,780.16-11,672.55-3,622.62

Finding the Fourth Proportional to 7,780.16, 11,672.55 and 3,622.62

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Solution

The fourth proportional to 7,780.16, 11,672.55 and 3,622.62 is: 5,435.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.16 : 11,672.55 = 3,622.62 : x
  2. Step 2: Convert to fraction form
    7,780.16/11,672.55 = 3,622.62/x
  3. Step 3: Cross multiply
    7,780.16x = 11,672.55 × 3,622.62
  4. Step 4: Simplify right side
    7,780.16x = 42,285,213.08
  5. Step 5: Solve for x
    x = 42,285,213.08/7,780.16
  6. Step 6: Final answer
    x = 5,435.01

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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.