Home / 3,078.81-4,616.12-1,764.05

Finding the Fourth Proportional to 3,078.81, 4,616.12 and 1,764.05

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Solution

The fourth proportional to 3,078.81, 4,616.12 and 1,764.05 is: 2,644.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.81 : 4,616.12 = 1,764.05 : x
  2. Step 2: Convert to fraction form
    3,078.81/4,616.12 = 1,764.05/x
  3. Step 3: Cross multiply
    3,078.81x = 4,616.12 × 1,764.05
  4. Step 4: Simplify right side
    3,078.81x = 8,143,047.82
  5. Step 5: Solve for x
    x = 8,143,047.82/3,078.81
  6. Step 6: Final answer
    x = 2,644.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.