Home / 5,183.90-7,775.84-1,288.31

Finding the Fourth Proportional to 5,183.90, 7,775.84 and 1,288.31

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Solution

The fourth proportional to 5,183.90, 7,775.84 and 1,288.31 is: 1,932.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,183.90 : 7,775.84 = 1,288.31 : x
  2. Step 2: Convert to fraction form
    5,183.90/7,775.84 = 1,288.31/x
  3. Step 3: Cross multiply
    5,183.90x = 7,775.84 × 1,288.31
  4. Step 4: Simplify right side
    5,183.90x = 10,017,692.43
  5. Step 5: Solve for x
    x = 10,017,692.43/5,183.90
  6. Step 6: Final answer
    x = 1,932.46

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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.