Home / 7,780.05-10,736.62-4,243.25

Finding the Fourth Proportional to 7,780.05, 10,736.62 and 4,243.25

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Solution

The fourth proportional to 7,780.05, 10,736.62 and 4,243.25 is: 5,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.05 : 10,736.62 = 4,243.25 : x
  2. Step 2: Convert to fraction form
    7,780.05/10,736.62 = 4,243.25/x
  3. Step 3: Cross multiply
    7,780.05x = 10,736.62 × 4,243.25
  4. Step 4: Simplify right side
    7,780.05x = 45,558,179.05
  5. Step 5: Solve for x
    x = 45,558,179.05/7,780.05
  6. Step 6: Final answer
    x = 5,855.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.