Home / 2,183.60-3,275.40-1,143.20

Finding the Fourth Proportional to 2,183.60, 3,275.40 and 1,143.20

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Solution

The fourth proportional to 2,183.60, 3,275.40 and 1,143.20 is: 1,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.60 : 3,275.40 = 1,143.20 : x
  2. Step 2: Convert to fraction form
    2,183.60/3,275.40 = 1,143.20/x
  3. Step 3: Cross multiply
    2,183.60x = 3,275.40 × 1,143.20
  4. Step 4: Simplify right side
    2,183.60x = 3,744,437.28
  5. Step 5: Solve for x
    x = 3,744,437.28/2,183.60
  6. Step 6: Final answer
    x = 1,714.80

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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.