Home / 2,771.28-4,157.64-1,384.56

Finding the Fourth Proportional to 2,771.28, 4,157.64 and 1,384.56

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Solution

The fourth proportional to 2,771.28, 4,157.64 and 1,384.56 is: 2,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.28 : 4,157.64 = 1,384.56 : x
  2. Step 2: Convert to fraction form
    2,771.28/4,157.64 = 1,384.56/x
  3. Step 3: Cross multiply
    2,771.28x = 4,157.64 × 1,384.56
  4. Step 4: Simplify right side
    2,771.28x = 5,756,502.04
  5. Step 5: Solve for x
    x = 5,756,502.04/2,771.28
  6. Step 6: Final answer
    x = 2,077.20

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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.