Home / 8,117.82-12,175.70-2,571.72

Finding the Fourth Proportional to 8,117.82, 12,175.70 and 2,571.72

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Solution

The fourth proportional to 8,117.82, 12,175.70 and 2,571.72 is: 3,857.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.82 : 12,175.70 = 2,571.72 : x
  2. Step 2: Convert to fraction form
    8,117.82/12,175.70 = 2,571.72/x
  3. Step 3: Cross multiply
    8,117.82x = 12,175.70 × 2,571.72
  4. Step 4: Simplify right side
    8,117.82x = 31,312,491.20
  5. Step 5: Solve for x
    x = 31,312,491.20/8,117.82
  6. Step 6: Final answer
    x = 3,857.25

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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.