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Finding the Fourth Proportional to 7,925.78, 11,888.10 and 3,308.78

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Solution

The fourth proportional to 7,925.78, 11,888.10 and 3,308.78 is: 4,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.78 : 11,888.10 = 3,308.78 : x
  2. Step 2: Convert to fraction form
    7,925.78/11,888.10 = 3,308.78/x
  3. Step 3: Cross multiply
    7,925.78x = 11,888.10 × 3,308.78
  4. Step 4: Simplify right side
    7,925.78x = 39,335,107.52
  5. Step 5: Solve for x
    x = 39,335,107.52/7,925.78
  6. Step 6: Final answer
    x = 4,962.93

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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.