Home / 5,123.78-7,687.51-2,162.96

Finding the Fourth Proportional to 5,123.78, 7,687.51 and 2,162.96

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Solution

The fourth proportional to 5,123.78, 7,687.51 and 2,162.96 is: 3,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.78 : 7,687.51 = 2,162.96 : x
  2. Step 2: Convert to fraction form
    5,123.78/7,687.51 = 2,162.96/x
  3. Step 3: Cross multiply
    5,123.78x = 7,687.51 × 2,162.96
  4. Step 4: Simplify right side
    5,123.78x = 16,627,776.63
  5. Step 5: Solve for x
    x = 16,627,776.63/5,123.78
  6. Step 6: Final answer
    x = 3,245.22

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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.