Home / 10,519.74-15,782.16-3,945.99

Finding the Fourth Proportional to 10,519.74, 15,782.16 and 3,945.99

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Solution

The fourth proportional to 10,519.74, 15,782.16 and 3,945.99 is: 5,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.74 : 15,782.16 = 3,945.99 : x
  2. Step 2: Convert to fraction form
    10,519.74/15,782.16 = 3,945.99/x
  3. Step 3: Cross multiply
    10,519.74x = 15,782.16 × 3,945.99
  4. Step 4: Simplify right side
    10,519.74x = 62,276,245.54
  5. Step 5: Solve for x
    x = 62,276,245.54/10,519.74
  6. Step 6: Final answer
    x = 5,919.94

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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.