Home / 5,125.46-7,687.40-1,427.30

Finding the Fourth Proportional to 5,125.46, 7,687.40 and 1,427.30

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Solution

The fourth proportional to 5,125.46, 7,687.40 and 1,427.30 is: 2,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.46 : 7,687.40 = 1,427.30 : x
  2. Step 2: Convert to fraction form
    5,125.46/7,687.40 = 1,427.30/x
  3. Step 3: Cross multiply
    5,125.46x = 7,687.40 × 1,427.30
  4. Step 4: Simplify right side
    5,125.46x = 10,972,226.02
  5. Step 5: Solve for x
    x = 10,972,226.02/5,125.46
  6. Step 6: Final answer
    x = 2,140.73

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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.