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Finding the Fourth Proportional to 8,982.18, 12,385.44 and 7,362.18

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Solution

The fourth proportional to 8,982.18, 12,385.44 and 7,362.18 is: 10,151.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,982.18 : 12,385.44 = 7,362.18 : x
  2. Step 2: Convert to fraction form
    8,982.18/12,385.44 = 7,362.18/x
  3. Step 3: Cross multiply
    8,982.18x = 12,385.44 × 7,362.18
  4. Step 4: Simplify right side
    8,982.18x = 91,183,838.66
  5. Step 5: Solve for x
    x = 91,183,838.66/8,982.18
  6. Step 6: Final answer
    x = 10,151.64

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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.