Home / 3,718.35-5,131.39-2,039.65

Finding the Fourth Proportional to 3,718.35, 5,131.39 and 2,039.65

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Solution

The fourth proportional to 3,718.35, 5,131.39 and 2,039.65 is: 2,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.35 : 5,131.39 = 2,039.65 : x
  2. Step 2: Convert to fraction form
    3,718.35/5,131.39 = 2,039.65/x
  3. Step 3: Cross multiply
    3,718.35x = 5,131.39 × 2,039.65
  4. Step 4: Simplify right side
    3,718.35x = 10,466,239.61
  5. Step 5: Solve for x
    x = 10,466,239.61/3,718.35
  6. Step 6: Final answer
    x = 2,814.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.