Home / 3,135.45-4,326.17-1,790.72

Finding the Fourth Proportional to 3,135.45, 4,326.17 and 1,790.72

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Solution

The fourth proportional to 3,135.45, 4,326.17 and 1,790.72 is: 2,470.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.45 : 4,326.17 = 1,790.72 : x
  2. Step 2: Convert to fraction form
    3,135.45/4,326.17 = 1,790.72/x
  3. Step 3: Cross multiply
    3,135.45x = 4,326.17 × 1,790.72
  4. Step 4: Simplify right side
    3,135.45x = 7,746,928.56
  5. Step 5: Solve for x
    x = 7,746,928.56/3,135.45
  6. Step 6: Final answer
    x = 2,470.75

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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.