Home / 3,135.45-4,326.99-1,809.23

Finding the Fourth Proportional to 3,135.45, 4,326.99 and 1,809.23

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Solution

The fourth proportional to 3,135.45, 4,326.99 and 1,809.23 is: 2,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.45 : 4,326.99 = 1,809.23 : x
  2. Step 2: Convert to fraction form
    3,135.45/4,326.99 = 1,809.23/x
  3. Step 3: Cross multiply
    3,135.45x = 4,326.99 × 1,809.23
  4. Step 4: Simplify right side
    3,135.45x = 7,828,520.12
  5. Step 5: Solve for x
    x = 7,828,520.12/3,135.45
  6. Step 6: Final answer
    x = 2,496.78

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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.