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Finding the Fourth Proportional to 8,815.50, 12,077.37 and 8,483.40

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Solution

The fourth proportional to 8,815.50, 12,077.37 and 8,483.40 is: 11,622.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.50 : 12,077.37 = 8,483.40 : x
  2. Step 2: Convert to fraction form
    8,815.50/12,077.37 = 8,483.40/x
  3. Step 3: Cross multiply
    8,815.50x = 12,077.37 × 8,483.40
  4. Step 4: Simplify right side
    8,815.50x = 102,457,160.66
  5. Step 5: Solve for x
    x = 102,457,160.66/8,815.50
  6. Step 6: Final answer
    x = 11,622.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.