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Finding the Fourth Proportional to 7,956.96, 10,981.92 and 6,628.56

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Solution

The fourth proportional to 7,956.96, 10,981.92 and 6,628.56 is: 9,148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.96 : 10,981.92 = 6,628.56 : x
  2. Step 2: Convert to fraction form
    7,956.96/10,981.92 = 6,628.56/x
  3. Step 3: Cross multiply
    7,956.96x = 10,981.92 × 6,628.56
  4. Step 4: Simplify right side
    7,956.96x = 72,794,315.64
  5. Step 5: Solve for x
    x = 72,794,315.64/7,956.96
  6. Step 6: Final answer
    x = 9,148.51

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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.