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Finding the Fourth Proportional to 9,365.10, 12,939.03 and 9,272.94

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Solution

The fourth proportional to 9,365.10, 12,939.03 and 9,272.94 is: 12,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.10 : 12,939.03 = 9,272.94 : x
  2. Step 2: Convert to fraction form
    9,365.10/12,939.03 = 9,272.94/x
  3. Step 3: Cross multiply
    9,365.10x = 12,939.03 × 9,272.94
  4. Step 4: Simplify right side
    9,365.10x = 119,982,848.85
  5. Step 5: Solve for x
    x = 119,982,848.85/9,365.10
  6. Step 6: Final answer
    x = 12,811.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.