Home / 3,689.76-5,090.43-2,431.47

Finding the Fourth Proportional to 3,689.76, 5,090.43 and 2,431.47

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Solution

The fourth proportional to 3,689.76, 5,090.43 and 2,431.47 is: 3,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.76 : 5,090.43 = 2,431.47 : x
  2. Step 2: Convert to fraction form
    3,689.76/5,090.43 = 2,431.47/x
  3. Step 3: Cross multiply
    3,689.76x = 5,090.43 × 2,431.47
  4. Step 4: Simplify right side
    3,689.76x = 12,377,227.83
  5. Step 5: Solve for x
    x = 12,377,227.83/3,689.76
  6. Step 6: Final answer
    x = 3,354.48

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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.