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Finding the Fourth Proportional to 7,925.82, 11,818.97 and 7,371.78

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Solution

The fourth proportional to 7,925.82, 11,818.97 and 7,371.78 is: 10,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.82 : 11,818.97 = 7,371.78 : x
  2. Step 2: Convert to fraction form
    7,925.82/11,818.97 = 7,371.78/x
  3. Step 3: Cross multiply
    7,925.82x = 11,818.97 × 7,371.78
  4. Step 4: Simplify right side
    7,925.82x = 87,126,809.81
  5. Step 5: Solve for x
    x = 87,126,809.81/7,925.82
  6. Step 6: Final answer
    x = 10,992.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.