Home / 3,140.43-4,708.83-1,292.88

Finding the Fourth Proportional to 3,140.43, 4,708.83 and 1,292.88

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Solution

The fourth proportional to 3,140.43, 4,708.83 and 1,292.88 is: 1,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.43 : 4,708.83 = 1,292.88 : x
  2. Step 2: Convert to fraction form
    3,140.43/4,708.83 = 1,292.88/x
  3. Step 3: Cross multiply
    3,140.43x = 4,708.83 × 1,292.88
  4. Step 4: Simplify right side
    3,140.43x = 6,087,952.13
  5. Step 5: Solve for x
    x = 6,087,952.13/3,140.43
  6. Step 6: Final answer
    x = 1,938.57

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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.