Home / 3,985.47-5,976.45-1,645.38

Finding the Fourth Proportional to 3,985.47, 5,976.45 and 1,645.38

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Solution

The fourth proportional to 3,985.47, 5,976.45 and 1,645.38 is: 2,467.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.47 : 5,976.45 = 1,645.38 : x
  2. Step 2: Convert to fraction form
    3,985.47/5,976.45 = 1,645.38/x
  3. Step 3: Cross multiply
    3,985.47x = 5,976.45 × 1,645.38
  4. Step 4: Simplify right side
    3,985.47x = 9,833,531.30
  5. Step 5: Solve for x
    x = 9,833,531.30/3,985.47
  6. Step 6: Final answer
    x = 2,467.35

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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.