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Finding the Fourth Proportional to 9,360.38, 12,887.84 and 7,941.12

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Solution

The fourth proportional to 9,360.38, 12,887.84 and 7,941.12 is: 10,933.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.38 : 12,887.84 = 7,941.12 : x
  2. Step 2: Convert to fraction form
    9,360.38/12,887.84 = 7,941.12/x
  3. Step 3: Cross multiply
    9,360.38x = 12,887.84 × 7,941.12
  4. Step 4: Simplify right side
    9,360.38x = 102,343,883.98
  5. Step 5: Solve for x
    x = 102,343,883.98/9,360.38
  6. Step 6: Final answer
    x = 10,933.73

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Half scale
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Double scale
Find fourth proportional to 9,361.38, 12,889.22 and 7,942.12
Similar ratio
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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.