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Finding the Fourth Proportional to 9,381.74, 12,945.08 and 5,348.39

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Solution

The fourth proportional to 9,381.74, 12,945.08 and 5,348.39 is: 7,379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.74 : 12,945.08 = 5,348.39 : x
  2. Step 2: Convert to fraction form
    9,381.74/12,945.08 = 5,348.39/x
  3. Step 3: Cross multiply
    9,381.74x = 12,945.08 × 5,348.39
  4. Step 4: Simplify right side
    9,381.74x = 69,235,387.37
  5. Step 5: Solve for x
    x = 69,235,387.37/9,381.74
  6. Step 6: Final answer
    x = 7,379.81

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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.