Home / 2,357.20-3,252.90-1,309.30

Finding the Fourth Proportional to 2,357.20, 3,252.90 and 1,309.30

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Solution

The fourth proportional to 2,357.20, 3,252.90 and 1,309.30 is: 1,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,357.20 : 3,252.90 = 1,309.30 : x
  2. Step 2: Convert to fraction form
    2,357.20/3,252.90 = 1,309.30/x
  3. Step 3: Cross multiply
    2,357.20x = 3,252.90 × 1,309.30
  4. Step 4: Simplify right side
    2,357.20x = 4,259,021.97
  5. Step 5: Solve for x
    x = 4,259,021.97/2,357.20
  6. Step 6: Final answer
    x = 1,806.81

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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.