Home / 3,106.02-4,286.16-1,780.05

Finding the Fourth Proportional to 3,106.02, 4,286.16 and 1,780.05

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Solution

The fourth proportional to 3,106.02, 4,286.16 and 1,780.05 is: 2,456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.02 : 4,286.16 = 1,780.05 : x
  2. Step 2: Convert to fraction form
    3,106.02/4,286.16 = 1,780.05/x
  3. Step 3: Cross multiply
    3,106.02x = 4,286.16 × 1,780.05
  4. Step 4: Simplify right side
    3,106.02x = 7,629,579.11
  5. Step 5: Solve for x
    x = 7,629,579.11/3,106.02
  6. Step 6: Final answer
    x = 2,456.38

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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.