Home / 2,760.36-4,138.58-1,298.76

Finding the Fourth Proportional to 2,760.36, 4,138.58 and 1,298.76

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Solution

The fourth proportional to 2,760.36, 4,138.58 and 1,298.76 is: 1,947.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.36 : 4,138.58 = 1,298.76 : x
  2. Step 2: Convert to fraction form
    2,760.36/4,138.58 = 1,298.76/x
  3. Step 3: Cross multiply
    2,760.36x = 4,138.58 × 1,298.76
  4. Step 4: Simplify right side
    2,760.36x = 5,375,022.16
  5. Step 5: Solve for x
    x = 5,375,022.16/2,760.36
  6. Step 6: Final answer
    x = 1,947.22

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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.