Home / 3,128.26-4,694.20-1,667.40

Finding the Fourth Proportional to 3,128.26, 4,694.20 and 1,667.40

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Solution

The fourth proportional to 3,128.26, 4,694.20 and 1,667.40 is: 2,502.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.26 : 4,694.20 = 1,667.40 : x
  2. Step 2: Convert to fraction form
    3,128.26/4,694.20 = 1,667.40/x
  3. Step 3: Cross multiply
    3,128.26x = 4,694.20 × 1,667.40
  4. Step 4: Simplify right side
    3,128.26x = 7,827,109.08
  5. Step 5: Solve for x
    x = 7,827,109.08/3,128.26
  6. Step 6: Final answer
    x = 2,502.06

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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.