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Finding the Fourth Proportional to 7,956.95, 11,916.95 and 7,680.17

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Solution

The fourth proportional to 7,956.95, 11,916.95 and 7,680.17 is: 11,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.95 : 11,916.95 = 7,680.17 : x
  2. Step 2: Convert to fraction form
    7,956.95/11,916.95 = 7,680.17/x
  3. Step 3: Cross multiply
    7,956.95x = 11,916.95 × 7,680.17
  4. Step 4: Simplify right side
    7,956.95x = 91,524,193.27
  5. Step 5: Solve for x
    x = 91,524,193.27/7,956.95
  6. Step 6: Final answer
    x = 11,502.43

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1.5x scale

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.