Home / 3,718.05-5,131.35-2,124.96

Finding the Fourth Proportional to 3,718.05, 5,131.35 and 2,124.96

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Solution

The fourth proportional to 3,718.05, 5,131.35 and 2,124.96 is: 2,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.05 : 5,131.35 = 2,124.96 : x
  2. Step 2: Convert to fraction form
    3,718.05/5,131.35 = 2,124.96/x
  3. Step 3: Cross multiply
    3,718.05x = 5,131.35 × 2,124.96
  4. Step 4: Simplify right side
    3,718.05x = 10,903,902.87
  5. Step 5: Solve for x
    x = 10,903,902.87/3,718.05
  6. Step 6: Final answer
    x = 2,932.69

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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.