Home / 3,078.63-4,619.31-1,617.45

Finding the Fourth Proportional to 3,078.63, 4,619.31 and 1,617.45

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Solution

The fourth proportional to 3,078.63, 4,619.31 and 1,617.45 is: 2,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.63 : 4,619.31 = 1,617.45 : x
  2. Step 2: Convert to fraction form
    3,078.63/4,619.31 = 1,617.45/x
  3. Step 3: Cross multiply
    3,078.63x = 4,619.31 × 1,617.45
  4. Step 4: Simplify right side
    3,078.63x = 7,471,502.96
  5. Step 5: Solve for x
    x = 7,471,502.96/3,078.63
  6. Step 6: Final answer
    x = 2,426.89

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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.