Home / 5,286.72-7,930.99-1,777.07

Finding the Fourth Proportional to 5,286.72, 7,930.99 and 1,777.07

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Solution

The fourth proportional to 5,286.72, 7,930.99 and 1,777.07 is: 2,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.72 : 7,930.99 = 1,777.07 : x
  2. Step 2: Convert to fraction form
    5,286.72/7,930.99 = 1,777.07/x
  3. Step 3: Cross multiply
    5,286.72x = 7,930.99 × 1,777.07
  4. Step 4: Simplify right side
    5,286.72x = 14,093,880.30
  5. Step 5: Solve for x
    x = 14,093,880.30/5,286.72
  6. Step 6: Final answer
    x = 2,665.91

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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.