Home / 3,178.56-4,767.36-1,423.20

Finding the Fourth Proportional to 3,178.56, 4,767.36 and 1,423.20

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Solution

The fourth proportional to 3,178.56, 4,767.36 and 1,423.20 is: 2,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.56 : 4,767.36 = 1,423.20 : x
  2. Step 2: Convert to fraction form
    3,178.56/4,767.36 = 1,423.20/x
  3. Step 3: Cross multiply
    3,178.56x = 4,767.36 × 1,423.20
  4. Step 4: Simplify right side
    3,178.56x = 6,784,906.75
  5. Step 5: Solve for x
    x = 6,784,906.75/3,178.56
  6. Step 6: Final answer
    x = 2,134.59

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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.