Home / 7,425.11-11,138.05-1,878.50

Finding the Fourth Proportional to 7,425.11, 11,138.05 and 1,878.50

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Solution

The fourth proportional to 7,425.11, 11,138.05 and 1,878.50 is: 2,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.11 : 11,138.05 = 1,878.50 : x
  2. Step 2: Convert to fraction form
    7,425.11/11,138.05 = 1,878.50/x
  3. Step 3: Cross multiply
    7,425.11x = 11,138.05 × 1,878.50
  4. Step 4: Simplify right side
    7,425.11x = 20,922,826.93
  5. Step 5: Solve for x
    x = 20,922,826.93/7,425.11
  6. Step 6: Final answer
    x = 2,817.85

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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.