Home / 2,183.40-3,012.12-1,298.70

Finding the Fourth Proportional to 2,183.40, 3,012.12 and 1,298.70

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Solution

The fourth proportional to 2,183.40, 3,012.12 and 1,298.70 is: 1,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.40 : 3,012.12 = 1,298.70 : x
  2. Step 2: Convert to fraction form
    2,183.40/3,012.12 = 1,298.70/x
  3. Step 3: Cross multiply
    2,183.40x = 3,012.12 × 1,298.70
  4. Step 4: Simplify right side
    2,183.40x = 3,911,840.24
  5. Step 5: Solve for x
    x = 3,911,840.24/2,183.40
  6. Step 6: Final answer
    x = 1,791.63

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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.