Home / 3,178.64-4,769.16-1,331

Finding the Fourth Proportional to 3,178.64, 4,769.16 and 1,331

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Solution

The fourth proportional to 3,178.64, 4,769.16 and 1,331 is: 1,997.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.64 : 4,769.16 = 1,331 : x
  2. Step 2: Convert to fraction form
    3,178.64/4,769.16 = 1,331/x
  3. Step 3: Cross multiply
    3,178.64x = 4,769.16 × 1,331
  4. Step 4: Simplify right side
    3,178.64x = 6,347,751.96
  5. Step 5: Solve for x
    x = 6,347,751.96/3,178.64
  6. Step 6: Final answer
    x = 1,997.00

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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.