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Finding the Fourth Proportional to 3,862.88, 5,794.20 and 1,089.74

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Solution

The fourth proportional to 3,862.88, 5,794.20 and 1,089.74 is: 1,634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.88 : 5,794.20 = 1,089.74 : x
  2. Step 2: Convert to fraction form
    3,862.88/5,794.20 = 1,089.74/x
  3. Step 3: Cross multiply
    3,862.88x = 5,794.20 × 1,089.74
  4. Step 4: Simplify right side
    3,862.88x = 6,314,171.51
  5. Step 5: Solve for x
    x = 6,314,171.51/3,862.88
  6. Step 6: Final answer
    x = 1,634.58

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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.