Home / 5,123.75-7,685.57-1,425.99

Finding the Fourth Proportional to 5,123.75, 7,685.57 and 1,425.99

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Solution

The fourth proportional to 5,123.75, 7,685.57 and 1,425.99 is: 2,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.75 : 7,685.57 = 1,425.99 : x
  2. Step 2: Convert to fraction form
    5,123.75/7,685.57 = 1,425.99/x
  3. Step 3: Cross multiply
    5,123.75x = 7,685.57 × 1,425.99
  4. Step 4: Simplify right side
    5,123.75x = 10,959,538.83
  5. Step 5: Solve for x
    x = 10,959,538.83/5,123.75
  6. Step 6: Final answer
    x = 2,138.97

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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.