Home / 5,123.44-7,685.21-1,425.94

Finding the Fourth Proportional to 5,123.44, 7,685.21 and 1,425.94

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Solution

The fourth proportional to 5,123.44, 7,685.21 and 1,425.94 is: 2,138.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.44 : 7,685.21 = 1,425.94 : x
  2. Step 2: Convert to fraction form
    5,123.44/7,685.21 = 1,425.94/x
  3. Step 3: Cross multiply
    5,123.44x = 7,685.21 × 1,425.94
  4. Step 4: Simplify right side
    5,123.44x = 10,958,648.35
  5. Step 5: Solve for x
    x = 10,958,648.35/5,123.44
  6. Step 6: Final answer
    x = 2,138.92

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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.