Home / 2,748.36-4,122.78-800.76

Finding the Fourth Proportional to 2,748.36, 4,122.78 and 800.76

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Solution

The fourth proportional to 2,748.36, 4,122.78 and 800.76 is: 1,201.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.36 : 4,122.78 = 800.76 : x
  2. Step 2: Convert to fraction form
    2,748.36/4,122.78 = 800.76/x
  3. Step 3: Cross multiply
    2,748.36x = 4,122.78 × 800.76
  4. Step 4: Simplify right side
    2,748.36x = 3,301,357.31
  5. Step 5: Solve for x
    x = 3,301,357.31/2,748.36
  6. Step 6: Final answer
    x = 1,201.21

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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.