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Finding the Fourth Proportional to 7,289.97, 10,926.54 and 3,123.78

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Solution

The fourth proportional to 7,289.97, 10,926.54 and 3,123.78 is: 4,682.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.97 : 10,926.54 = 3,123.78 : x
  2. Step 2: Convert to fraction form
    7,289.97/10,926.54 = 3,123.78/x
  3. Step 3: Cross multiply
    7,289.97x = 10,926.54 × 3,123.78
  4. Step 4: Simplify right side
    7,289.97x = 34,132,107.12
  5. Step 5: Solve for x
    x = 34,132,107.12/7,289.97
  6. Step 6: Final answer
    x = 4,682.06

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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.