Home / 8,103.50-12,155.25-2,631.50

Finding the Fourth Proportional to 8,103.50, 12,155.25 and 2,631.50

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Solution

The fourth proportional to 8,103.50, 12,155.25 and 2,631.50 is: 3,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.50 : 12,155.25 = 2,631.50 : x
  2. Step 2: Convert to fraction form
    8,103.50/12,155.25 = 2,631.50/x
  3. Step 3: Cross multiply
    8,103.50x = 12,155.25 × 2,631.50
  4. Step 4: Simplify right side
    8,103.50x = 31,986,540.38
  5. Step 5: Solve for x
    x = 31,986,540.38/8,103.50
  6. Step 6: Final answer
    x = 3,947.25

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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.