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Finding the Fourth Proportional to 9,191.94, 13,787.88 and 2,618.22

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Solution

The fourth proportional to 9,191.94, 13,787.88 and 2,618.22 is: 3,927.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.94 : 13,787.88 = 2,618.22 : x
  2. Step 2: Convert to fraction form
    9,191.94/13,787.88 = 2,618.22/x
  3. Step 3: Cross multiply
    9,191.94x = 13,787.88 × 2,618.22
  4. Step 4: Simplify right side
    9,191.94x = 36,099,703.17
  5. Step 5: Solve for x
    x = 36,099,703.17/9,191.94
  6. Step 6: Final answer
    x = 3,927.32

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.