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Finding the Fourth Proportional to 8,866.24, 12,239.84 and 6,872.32

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Solution

The fourth proportional to 8,866.24, 12,239.84 and 6,872.32 is: 9,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.24 : 12,239.84 = 6,872.32 : x
  2. Step 2: Convert to fraction form
    8,866.24/12,239.84 = 6,872.32/x
  3. Step 3: Cross multiply
    8,866.24x = 12,239.84 × 6,872.32
  4. Step 4: Simplify right side
    8,866.24x = 84,116,097.23
  5. Step 5: Solve for x
    x = 84,116,097.23/8,866.24
  6. Step 6: Final answer
    x = 9,487.23

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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.