Home / 6,921.63-9,551.81-3,777.82

Finding the Fourth Proportional to 6,921.63, 9,551.81 and 3,777.82

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Solution

The fourth proportional to 6,921.63, 9,551.81 and 3,777.82 is: 5,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.63 : 9,551.81 = 3,777.82 : x
  2. Step 2: Convert to fraction form
    6,921.63/9,551.81 = 3,777.82/x
  3. Step 3: Cross multiply
    6,921.63x = 9,551.81 × 3,777.82
  4. Step 4: Simplify right side
    6,921.63x = 36,085,018.85
  5. Step 5: Solve for x
    x = 36,085,018.85/6,921.63
  6. Step 6: Final answer
    x = 5,213.37

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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.