Home / 3,124.26-4,308.57-2,131.02

Finding the Fourth Proportional to 3,124.26, 4,308.57 and 2,131.02

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Solution

The fourth proportional to 3,124.26, 4,308.57 and 2,131.02 is: 2,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.26 : 4,308.57 = 2,131.02 : x
  2. Step 2: Convert to fraction form
    3,124.26/4,308.57 = 2,131.02/x
  3. Step 3: Cross multiply
    3,124.26x = 4,308.57 × 2,131.02
  4. Step 4: Simplify right side
    3,124.26x = 9,181,648.84
  5. Step 5: Solve for x
    x = 9,181,648.84/3,124.26
  6. Step 6: Final answer
    x = 2,938.82

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1.5x scale

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.