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Finding the Fourth Proportional to 7,885.90, 11,828.84 and 2,957.86

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Solution

The fourth proportional to 7,885.90, 11,828.84 and 2,957.86 is: 4,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.90 : 11,828.84 = 2,957.86 : x
  2. Step 2: Convert to fraction form
    7,885.90/11,828.84 = 2,957.86/x
  3. Step 3: Cross multiply
    7,885.90x = 11,828.84 × 2,957.86
  4. Step 4: Simplify right side
    7,885.90x = 34,988,052.68
  5. Step 5: Solve for x
    x = 34,988,052.68/7,885.90
  6. Step 6: Final answer
    x = 4,436.79

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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.