Home / 3,125.20-4,687.79-1,277.19

Finding the Fourth Proportional to 3,125.20, 4,687.79 and 1,277.19

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Solution

The fourth proportional to 3,125.20, 4,687.79 and 1,277.19 is: 1,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.20 : 4,687.79 = 1,277.19 : x
  2. Step 2: Convert to fraction form
    3,125.20/4,687.79 = 1,277.19/x
  3. Step 3: Cross multiply
    3,125.20x = 4,687.79 × 1,277.19
  4. Step 4: Simplify right side
    3,125.20x = 5,987,198.51
  5. Step 5: Solve for x
    x = 5,987,198.51/3,125.20
  6. Step 6: Final answer
    x = 1,915.78

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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.