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Finding the Fourth Proportional to 8,768.99, 12,101.19 and 4,991.96

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Solution

The fourth proportional to 8,768.99, 12,101.19 and 4,991.96 is: 6,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.99 : 12,101.19 = 4,991.96 : x
  2. Step 2: Convert to fraction form
    8,768.99/12,101.19 = 4,991.96/x
  3. Step 3: Cross multiply
    8,768.99x = 12,101.19 × 4,991.96
  4. Step 4: Simplify right side
    8,768.99x = 60,408,595.93
  5. Step 5: Solve for x
    x = 60,408,595.93/8,768.99
  6. Step 6: Final answer
    x = 6,888.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.