Home / 2,723.28-3,756.78-1,778.64

Finding the Fourth Proportional to 2,723.28, 3,756.78 and 1,778.64

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Solution

The fourth proportional to 2,723.28, 3,756.78 and 1,778.64 is: 2,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,723.28 : 3,756.78 = 1,778.64 : x
  2. Step 2: Convert to fraction form
    2,723.28/3,756.78 = 1,778.64/x
  3. Step 3: Cross multiply
    2,723.28x = 3,756.78 × 1,778.64
  4. Step 4: Simplify right side
    2,723.28x = 6,681,959.18
  5. Step 5: Solve for x
    x = 6,681,959.18/2,723.28
  6. Step 6: Final answer
    x = 2,453.64

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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.