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Finding the Fourth Proportional to 9,340.31, 12,914.24 and 8,927.21

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Solution

The fourth proportional to 9,340.31, 12,914.24 and 8,927.21 is: 12,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.31 : 12,914.24 = 8,927.21 : x
  2. Step 2: Convert to fraction form
    9,340.31/12,914.24 = 8,927.21/x
  3. Step 3: Cross multiply
    9,340.31x = 12,914.24 × 8,927.21
  4. Step 4: Simplify right side
    9,340.31x = 115,288,120.12
  5. Step 5: Solve for x
    x = 115,288,120.12/9,340.31
  6. Step 6: Final answer
    x = 12,343.07

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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.