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Finding the Fourth Proportional to 7,925.50, 11,888.34 and 3,308.50

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Solution

The fourth proportional to 7,925.50, 11,888.34 and 3,308.50 is: 4,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.50 : 11,888.34 = 3,308.50 : x
  2. Step 2: Convert to fraction form
    7,925.50/11,888.34 = 3,308.50/x
  3. Step 3: Cross multiply
    7,925.50x = 11,888.34 × 3,308.50
  4. Step 4: Simplify right side
    7,925.50x = 39,332,572.89
  5. Step 5: Solve for x
    x = 39,332,572.89/7,925.50
  6. Step 6: Final answer
    x = 4,962.79

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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.