Home / 3,636.72-5,455.62-1,787.58

Finding the Fourth Proportional to 3,636.72, 5,455.62 and 1,787.58

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Solution

The fourth proportional to 3,636.72, 5,455.62 and 1,787.58 is: 2,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.72 : 5,455.62 = 1,787.58 : x
  2. Step 2: Convert to fraction form
    3,636.72/5,455.62 = 1,787.58/x
  3. Step 3: Cross multiply
    3,636.72x = 5,455.62 × 1,787.58
  4. Step 4: Simplify right side
    3,636.72x = 9,752,357.20
  5. Step 5: Solve for x
    x = 9,752,357.20/3,636.72
  6. Step 6: Final answer
    x = 2,681.64

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1.5x scale

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.