Home / 5,107.50-7,661.25-1,644.75

Finding the Fourth Proportional to 5,107.50, 7,661.25 and 1,644.75

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Solution

The fourth proportional to 5,107.50, 7,661.25 and 1,644.75 is: 2,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.50 : 7,661.25 = 1,644.75 : x
  2. Step 2: Convert to fraction form
    5,107.50/7,661.25 = 1,644.75/x
  3. Step 3: Cross multiply
    5,107.50x = 7,661.25 × 1,644.75
  4. Step 4: Simplify right side
    5,107.50x = 12,600,840.94
  5. Step 5: Solve for x
    x = 12,600,840.94/5,107.50
  6. Step 6: Final answer
    x = 2,467.13

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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.