Home / 3,718.45-5,131.45-2,039.91

Finding the Fourth Proportional to 3,718.45, 5,131.45 and 2,039.91

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Solution

The fourth proportional to 3,718.45, 5,131.45 and 2,039.91 is: 2,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.45 : 5,131.45 = 2,039.91 : x
  2. Step 2: Convert to fraction form
    3,718.45/5,131.45 = 2,039.91/x
  3. Step 3: Cross multiply
    3,718.45x = 5,131.45 × 2,039.91
  4. Step 4: Simplify right side
    3,718.45x = 10,467,696.17
  5. Step 5: Solve for x
    x = 10,467,696.17/3,718.45
  6. Step 6: Final answer
    x = 2,815.07

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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.