Home / 3,685.62-5,090.58-2,689.32

Finding the Fourth Proportional to 3,685.62, 5,090.58 and 2,689.32

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Solution

The fourth proportional to 3,685.62, 5,090.58 and 2,689.32 is: 3,714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.62 : 5,090.58 = 2,689.32 : x
  2. Step 2: Convert to fraction form
    3,685.62/5,090.58 = 2,689.32/x
  3. Step 3: Cross multiply
    3,685.62x = 5,090.58 × 2,689.32
  4. Step 4: Simplify right side
    3,685.62x = 13,690,198.61
  5. Step 5: Solve for x
    x = 13,690,198.61/3,685.62
  6. Step 6: Final answer
    x = 3,714.49

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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.