Home / 3,047.11-4,204.94-1,720.78

Finding the Fourth Proportional to 3,047.11, 4,204.94 and 1,720.78

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Solution

The fourth proportional to 3,047.11, 4,204.94 and 1,720.78 is: 2,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.11 : 4,204.94 = 1,720.78 : x
  2. Step 2: Convert to fraction form
    3,047.11/4,204.94 = 1,720.78/x
  3. Step 3: Cross multiply
    3,047.11x = 4,204.94 × 1,720.78
  4. Step 4: Simplify right side
    3,047.11x = 7,235,776.65
  5. Step 5: Solve for x
    x = 7,235,776.65/3,047.11
  6. Step 6: Final answer
    x = 2,374.64

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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.