Home / 3,129.81-4,687.77-2,249.66

Finding the Fourth Proportional to 3,129.81, 4,687.77 and 2,249.66

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Solution

The fourth proportional to 3,129.81, 4,687.77 and 2,249.66 is: 3,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.81 : 4,687.77 = 2,249.66 : x
  2. Step 2: Convert to fraction form
    3,129.81/4,687.77 = 2,249.66/x
  3. Step 3: Cross multiply
    3,129.81x = 4,687.77 × 2,249.66
  4. Step 4: Simplify right side
    3,129.81x = 10,545,888.66
  5. Step 5: Solve for x
    x = 10,545,888.66/3,129.81
  6. Step 6: Final answer
    x = 3,369.50

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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.