Home / 2,183.40-3,275.10-1,319.40

Finding the Fourth Proportional to 2,183.40, 3,275.10 and 1,319.40

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Solution

The fourth proportional to 2,183.40, 3,275.10 and 1,319.40 is: 1,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.40 : 3,275.10 = 1,319.40 : x
  2. Step 2: Convert to fraction form
    2,183.40/3,275.10 = 1,319.40/x
  3. Step 3: Cross multiply
    2,183.40x = 3,275.10 × 1,319.40
  4. Step 4: Simplify right side
    2,183.40x = 4,321,166.94
  5. Step 5: Solve for x
    x = 4,321,166.94/2,183.40
  6. Step 6: Final answer
    x = 1,979.10

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1.5x scale

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.