Home / 2,309.60-3,184.97-1,425.21

Finding the Fourth Proportional to 2,309.60, 3,184.97 and 1,425.21

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Solution

The fourth proportional to 2,309.60, 3,184.97 and 1,425.21 is: 1,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.60 : 3,184.97 = 1,425.21 : x
  2. Step 2: Convert to fraction form
    2,309.60/3,184.97 = 1,425.21/x
  3. Step 3: Cross multiply
    2,309.60x = 3,184.97 × 1,425.21
  4. Step 4: Simplify right side
    2,309.60x = 4,539,243.97
  5. Step 5: Solve for x
    x = 4,539,243.97/2,309.60
  6. Step 6: Final answer
    x = 1,965.39

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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.