Home / 3,931.49-5,425.26-2,162.81

Finding the Fourth Proportional to 3,931.49, 5,425.26 and 2,162.81

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Solution

The fourth proportional to 3,931.49, 5,425.26 and 2,162.81 is: 2,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.49 : 5,425.26 = 2,162.81 : x
  2. Step 2: Convert to fraction form
    3,931.49/5,425.26 = 2,162.81/x
  3. Step 3: Cross multiply
    3,931.49x = 5,425.26 × 2,162.81
  4. Step 4: Simplify right side
    3,931.49x = 11,733,806.58
  5. Step 5: Solve for x
    x = 11,733,806.58/3,931.49
  6. Step 6: Final answer
    x = 2,984.57

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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.