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Finding the Fourth Proportional to 8,151.98, 12,228.94 and 2,885.90

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Solution

The fourth proportional to 8,151.98, 12,228.94 and 2,885.90 is: 4,329.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.98 : 12,228.94 = 2,885.90 : x
  2. Step 2: Convert to fraction form
    8,151.98/12,228.94 = 2,885.90/x
  3. Step 3: Cross multiply
    8,151.98x = 12,228.94 × 2,885.90
  4. Step 4: Simplify right side
    8,151.98x = 35,291,440.41
  5. Step 5: Solve for x
    x = 35,291,440.41/8,151.98
  6. Step 6: Final answer
    x = 4,329.19

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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.