Home / 2,748.25-4,122.38-800.45

Finding the Fourth Proportional to 2,748.25, 4,122.38 and 800.45

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Solution

The fourth proportional to 2,748.25, 4,122.38 and 800.45 is: 1,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.25 : 4,122.38 = 800.45 : x
  2. Step 2: Convert to fraction form
    2,748.25/4,122.38 = 800.45/x
  3. Step 3: Cross multiply
    2,748.25x = 4,122.38 × 800.45
  4. Step 4: Simplify right side
    2,748.25x = 3,299,751.42
  5. Step 5: Solve for x
    x = 3,299,751.42/2,748.25
  6. Step 6: Final answer
    x = 1,200.68

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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.