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Finding the Fourth Proportional to 8,455.52, 12,682.74 and 2,911.52

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Solution

The fourth proportional to 8,455.52, 12,682.74 and 2,911.52 is: 4,367.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.52 : 12,682.74 = 2,911.52 : x
  2. Step 2: Convert to fraction form
    8,455.52/12,682.74 = 2,911.52/x
  3. Step 3: Cross multiply
    8,455.52x = 12,682.74 × 2,911.52
  4. Step 4: Simplify right side
    8,455.52x = 36,926,051.16
  5. Step 5: Solve for x
    x = 36,926,051.16/8,455.52
  6. Step 6: Final answer
    x = 4,367.09

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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.