Home / 5,471.84-8,207.78-2,185.76

Finding the Fourth Proportional to 5,471.84, 8,207.78 and 2,185.76

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Solution

The fourth proportional to 5,471.84, 8,207.78 and 2,185.76 is: 3,278.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,471.84 : 8,207.78 = 2,185.76 : x
  2. Step 2: Convert to fraction form
    5,471.84/8,207.78 = 2,185.76/x
  3. Step 3: Cross multiply
    5,471.84x = 8,207.78 × 2,185.76
  4. Step 4: Simplify right side
    5,471.84x = 17,940,185.25
  5. Step 5: Solve for x
    x = 17,940,185.25/5,471.84
  6. Step 6: Final answer
    x = 3,278.64

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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.