Home / 5,138.31-7,705.83-1,674.75

Finding the Fourth Proportional to 5,138.31, 7,705.83 and 1,674.75

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Solution

The fourth proportional to 5,138.31, 7,705.83 and 1,674.75 is: 2,511.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.31 : 7,705.83 = 1,674.75 : x
  2. Step 2: Convert to fraction form
    5,138.31/7,705.83 = 1,674.75/x
  3. Step 3: Cross multiply
    5,138.31x = 7,705.83 × 1,674.75
  4. Step 4: Simplify right side
    5,138.31x = 12,905,338.79
  5. Step 5: Solve for x
    x = 12,905,338.79/5,138.31
  6. Step 6: Final answer
    x = 2,511.59

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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.