Home / 3,087.88-4,261.86-1,909.48

Finding the Fourth Proportional to 3,087.88, 4,261.86 and 1,909.48

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Solution

The fourth proportional to 3,087.88, 4,261.86 and 1,909.48 is: 2,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.88 : 4,261.86 = 1,909.48 : x
  2. Step 2: Convert to fraction form
    3,087.88/4,261.86 = 1,909.48/x
  3. Step 3: Cross multiply
    3,087.88x = 4,261.86 × 1,909.48
  4. Step 4: Simplify right side
    3,087.88x = 8,137,936.43
  5. Step 5: Solve for x
    x = 8,137,936.43/3,087.88
  6. Step 6: Final answer
    x = 2,635.44

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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.