Home / 7,981.56-11,961.81-4,471.47

Finding the Fourth Proportional to 7,981.56, 11,961.81 and 4,471.47

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Solution

The fourth proportional to 7,981.56, 11,961.81 and 4,471.47 is: 6,701.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.56 : 11,961.81 = 4,471.47 : x
  2. Step 2: Convert to fraction form
    7,981.56/11,961.81 = 4,471.47/x
  3. Step 3: Cross multiply
    7,981.56x = 11,961.81 × 4,471.47
  4. Step 4: Simplify right side
    7,981.56x = 53,486,874.56
  5. Step 5: Solve for x
    x = 53,486,874.56/7,981.56
  6. Step 6: Final answer
    x = 6,701.31

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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.