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Finding the Fourth Proportional to 7,888.79, 11,835.46 and 2,551.85

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Solution

The fourth proportional to 7,888.79, 11,835.46 and 2,551.85 is: 3,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.79 : 11,835.46 = 2,551.85 : x
  2. Step 2: Convert to fraction form
    7,888.79/11,835.46 = 2,551.85/x
  3. Step 3: Cross multiply
    7,888.79x = 11,835.46 × 2,551.85
  4. Step 4: Simplify right side
    7,888.79x = 30,202,318.60
  5. Step 5: Solve for x
    x = 30,202,318.60/7,888.79
  6. Step 6: Final answer
    x = 3,828.51

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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.