Home / 6,921.70-10,365.47-3,952.78

Finding the Fourth Proportional to 6,921.70, 10,365.47 and 3,952.78

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Solution

The fourth proportional to 6,921.70, 10,365.47 and 3,952.78 is: 5,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.70 : 10,365.47 = 3,952.78 : x
  2. Step 2: Convert to fraction form
    6,921.70/10,365.47 = 3,952.78/x
  3. Step 3: Cross multiply
    6,921.70x = 10,365.47 × 3,952.78
  4. Step 4: Simplify right side
    6,921.70x = 40,972,350.92
  5. Step 5: Solve for x
    x = 40,972,350.92/6,921.70
  6. Step 6: Final answer
    x = 5,919.41

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1.5x scale

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.