Home / 9,191.84-12,699.60-6,409.76

Finding the Fourth Proportional to 9,191.84, 12,699.60 and 6,409.76

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Solution

The fourth proportional to 9,191.84, 12,699.60 and 6,409.76 is: 8,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.84 : 12,699.60 = 6,409.76 : x
  2. Step 2: Convert to fraction form
    9,191.84/12,699.60 = 6,409.76/x
  3. Step 3: Cross multiply
    9,191.84x = 12,699.60 × 6,409.76
  4. Step 4: Simplify right side
    9,191.84x = 81,401,388.10
  5. Step 5: Solve for x
    x = 81,401,388.10/9,191.84
  6. Step 6: Final answer
    x = 8,855.83

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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.