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Finding the Fourth Proportional to 7,884.99, 10,885.50 and 6,179.99

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Solution

The fourth proportional to 7,884.99, 10,885.50 and 6,179.99 is: 8,531.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.99 : 10,885.50 = 6,179.99 : x
  2. Step 2: Convert to fraction form
    7,884.99/10,885.50 = 6,179.99/x
  3. Step 3: Cross multiply
    7,884.99x = 10,885.50 × 6,179.99
  4. Step 4: Simplify right side
    7,884.99x = 67,272,226.72
  5. Step 5: Solve for x
    x = 67,272,226.72/7,884.99
  6. Step 6: Final answer
    x = 8,531.68

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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.