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Finding the Fourth Proportional to 8,453.52, 12,679.74 and 2,909.52

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Solution

The fourth proportional to 8,453.52, 12,679.74 and 2,909.52 is: 4,364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.52 : 12,679.74 = 2,909.52 : x
  2. Step 2: Convert to fraction form
    8,453.52/12,679.74 = 2,909.52/x
  3. Step 3: Cross multiply
    8,453.52x = 12,679.74 × 2,909.52
  4. Step 4: Simplify right side
    8,453.52x = 36,891,957.12
  5. Step 5: Solve for x
    x = 36,891,957.12/8,453.52
  6. Step 6: Final answer
    x = 4,364.09

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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.