Home / 5,125.14-7,687.48-1,427.56

Finding the Fourth Proportional to 5,125.14, 7,687.48 and 1,427.56

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Solution

The fourth proportional to 5,125.14, 7,687.48 and 1,427.56 is: 2,141.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.14 : 7,687.48 = 1,427.56 : x
  2. Step 2: Convert to fraction form
    5,125.14/7,687.48 = 1,427.56/x
  3. Step 3: Cross multiply
    5,125.14x = 7,687.48 × 1,427.56
  4. Step 4: Simplify right side
    5,125.14x = 10,974,338.95
  5. Step 5: Solve for x
    x = 10,974,338.95/5,125.14
  6. Step 6: Final answer
    x = 2,141.28

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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.