Home / 7,782.43-10,739.83-4,245.71

Finding the Fourth Proportional to 7,782.43, 10,739.83 and 4,245.71

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Solution

The fourth proportional to 7,782.43, 10,739.83 and 4,245.71 is: 5,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.43 : 10,739.83 = 4,245.71 : x
  2. Step 2: Convert to fraction form
    7,782.43/10,739.83 = 4,245.71/x
  3. Step 3: Cross multiply
    7,782.43x = 10,739.83 × 4,245.71
  4. Step 4: Simplify right side
    7,782.43x = 45,598,203.63
  5. Step 5: Solve for x
    x = 45,598,203.63/7,782.43
  6. Step 6: Final answer
    x = 5,859.12

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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.