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Finding the Fourth Proportional to 8,243.52, 12,356.64 and 6,521.28

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Solution

The fourth proportional to 8,243.52, 12,356.64 and 6,521.28 is: 9,775.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,243.52 : 12,356.64 = 6,521.28 : x
  2. Step 2: Convert to fraction form
    8,243.52/12,356.64 = 6,521.28/x
  3. Step 3: Cross multiply
    8,243.52x = 12,356.64 × 6,521.28
  4. Step 4: Simplify right side
    8,243.52x = 80,581,109.30
  5. Step 5: Solve for x
    x = 80,581,109.30/8,243.52
  6. Step 6: Final answer
    x = 9,775.09

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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.