Home / 3,909.32-5,393.94-2,859.56

Finding the Fourth Proportional to 3,909.32, 5,393.94 and 2,859.56

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Solution

The fourth proportional to 3,909.32, 5,393.94 and 2,859.56 is: 3,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.32 : 5,393.94 = 2,859.56 : x
  2. Step 2: Convert to fraction form
    3,909.32/5,393.94 = 2,859.56/x
  3. Step 3: Cross multiply
    3,909.32x = 5,393.94 × 2,859.56
  4. Step 4: Simplify right side
    3,909.32x = 15,424,295.07
  5. Step 5: Solve for x
    x = 15,424,295.07/3,909.32
  6. Step 6: Final answer
    x = 3,945.52

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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.