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Finding the Fourth Proportional to 8,972, 12,382.44 and 5,246

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Solution

The fourth proportional to 8,972, 12,382.44 and 5,246 is: 7,240.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972 : 12,382.44 = 5,246 : x
  2. Step 2: Convert to fraction form
    8,972/12,382.44 = 5,246/x
  3. Step 3: Cross multiply
    8,972x = 12,382.44 × 5,246
  4. Step 4: Simplify right side
    8,972x = 64,958,280.24
  5. Step 5: Solve for x
    x = 64,958,280.24/8,972
  6. Step 6: Final answer
    x = 7,240.11

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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.