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Finding the Fourth Proportional to 8,880.69, 13,321.01 and 8,339.38

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Solution

The fourth proportional to 8,880.69, 13,321.01 and 8,339.38 is: 12,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.69 : 13,321.01 = 8,339.38 : x
  2. Step 2: Convert to fraction form
    8,880.69/13,321.01 = 8,339.38/x
  3. Step 3: Cross multiply
    8,880.69x = 13,321.01 × 8,339.38
  4. Step 4: Simplify right side
    8,880.69x = 111,088,922.68
  5. Step 5: Solve for x
    x = 111,088,922.68/8,880.69
  6. Step 6: Final answer
    x = 12,509.05

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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.