Home / 7,425.21-11,137.83-1,878.57

Finding the Fourth Proportional to 7,425.21, 11,137.83 and 1,878.57

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Solution

The fourth proportional to 7,425.21, 11,137.83 and 1,878.57 is: 2,817.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.21 : 11,137.83 = 1,878.57 : x
  2. Step 2: Convert to fraction form
    7,425.21/11,137.83 = 1,878.57/x
  3. Step 3: Cross multiply
    7,425.21x = 11,137.83 × 1,878.57
  4. Step 4: Simplify right side
    7,425.21x = 20,923,186.26
  5. Step 5: Solve for x
    x = 20,923,186.26/7,425.21
  6. Step 6: Final answer
    x = 2,817.86

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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.