Home / 2,309.52-3,186.96-1,425.30

Finding the Fourth Proportional to 2,309.52, 3,186.96 and 1,425.30

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Solution

The fourth proportional to 2,309.52, 3,186.96 and 1,425.30 is: 1,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.52 : 3,186.96 = 1,425.30 : x
  2. Step 2: Convert to fraction form
    2,309.52/3,186.96 = 1,425.30/x
  3. Step 3: Cross multiply
    2,309.52x = 3,186.96 × 1,425.30
  4. Step 4: Simplify right side
    2,309.52x = 4,542,374.09
  5. Step 5: Solve for x
    x = 4,542,374.09/2,309.52
  6. Step 6: Final answer
    x = 1,966.80

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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.