Home / 3,718.32-5,131.32-2,039.70

Finding the Fourth Proportional to 3,718.32, 5,131.32 and 2,039.70

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Solution

The fourth proportional to 3,718.32, 5,131.32 and 2,039.70 is: 2,814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.32 : 5,131.32 = 2,039.70 : x
  2. Step 2: Convert to fraction form
    3,718.32/5,131.32 = 2,039.70/x
  3. Step 3: Cross multiply
    3,718.32x = 5,131.32 × 2,039.70
  4. Step 4: Simplify right side
    3,718.32x = 10,466,353.40
  5. Step 5: Solve for x
    x = 10,466,353.40/3,718.32
  6. Step 6: Final answer
    x = 2,814.81

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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.