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Finding the Fourth Proportional to 8,536.80, 12,801.12 and 4,378.80

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Solution

The fourth proportional to 8,536.80, 12,801.12 and 4,378.80 is: 6,566.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,536.80 : 12,801.12 = 4,378.80 : x
  2. Step 2: Convert to fraction form
    8,536.80/12,801.12 = 4,378.80/x
  3. Step 3: Cross multiply
    8,536.80x = 12,801.12 × 4,378.80
  4. Step 4: Simplify right side
    8,536.80x = 56,053,544.26
  5. Step 5: Solve for x
    x = 56,053,544.26/8,536.80
  6. Step 6: Final answer
    x = 6,566.11

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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.