Home / 3,278.57-4,917.85-1,087.46

Finding the Fourth Proportional to 3,278.57, 4,917.85 and 1,087.46

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Solution

The fourth proportional to 3,278.57, 4,917.85 and 1,087.46 is: 1,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.57 : 4,917.85 = 1,087.46 : x
  2. Step 2: Convert to fraction form
    3,278.57/4,917.85 = 1,087.46/x
  3. Step 3: Cross multiply
    3,278.57x = 4,917.85 × 1,087.46
  4. Step 4: Simplify right side
    3,278.57x = 5,347,956.30
  5. Step 5: Solve for x
    x = 5,347,956.30/3,278.57
  6. Step 6: Final answer
    x = 1,631.19

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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.