Home / 3,127.05-4,689.63-1,645.47

Finding the Fourth Proportional to 3,127.05, 4,689.63 and 1,645.47

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Solution

The fourth proportional to 3,127.05, 4,689.63 and 1,645.47 is: 2,467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.05 : 4,689.63 = 1,645.47 : x
  2. Step 2: Convert to fraction form
    3,127.05/4,689.63 = 1,645.47/x
  3. Step 3: Cross multiply
    3,127.05x = 4,689.63 × 1,645.47
  4. Step 4: Simplify right side
    3,127.05x = 7,716,645.48
  5. Step 5: Solve for x
    x = 7,716,645.48/3,127.05
  6. Step 6: Final answer
    x = 2,467.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.