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Finding the Fourth Proportional to 8,881.02, 13,336.65 and 8,509.50

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Solution

The fourth proportional to 8,881.02, 13,336.65 and 8,509.50 is: 12,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.02 : 13,336.65 = 8,509.50 : x
  2. Step 2: Convert to fraction form
    8,881.02/13,336.65 = 8,509.50/x
  3. Step 3: Cross multiply
    8,881.02x = 13,336.65 × 8,509.50
  4. Step 4: Simplify right side
    8,881.02x = 113,488,223.18
  5. Step 5: Solve for x
    x = 113,488,223.18/8,881.02
  6. Step 6: Final answer
    x = 12,778.74

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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.