Home / 8,976.18-12,387.62-4,997.21

Finding the Fourth Proportional to 8,976.18, 12,387.62 and 4,997.21

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Solution

The fourth proportional to 8,976.18, 12,387.62 and 4,997.21 is: 6,896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.18 : 12,387.62 = 4,997.21 : x
  2. Step 2: Convert to fraction form
    8,976.18/12,387.62 = 4,997.21/x
  3. Step 3: Cross multiply
    8,976.18x = 12,387.62 × 4,997.21
  4. Step 4: Simplify right side
    8,976.18x = 61,903,538.54
  5. Step 5: Solve for x
    x = 61,903,538.54/8,976.18
  6. Step 6: Final answer
    x = 6,896.42

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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.