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Finding the Fourth Proportional to 8,866.51, 12,236.64 and 6,624.49

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Solution

The fourth proportional to 8,866.51, 12,236.64 and 6,624.49 is: 9,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.51 : 12,236.64 = 6,624.49 : x
  2. Step 2: Convert to fraction form
    8,866.51/12,236.64 = 6,624.49/x
  3. Step 3: Cross multiply
    8,866.51x = 12,236.64 × 6,624.49
  4. Step 4: Simplify right side
    8,866.51x = 81,061,539.45
  5. Step 5: Solve for x
    x = 81,061,539.45/8,866.51
  6. Step 6: Final answer
    x = 9,142.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.