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Finding the Fourth Proportional to 7,908.84, 11,859.84 and 2,715.12

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Solution

The fourth proportional to 7,908.84, 11,859.84 and 2,715.12 is: 4,071.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.84 : 11,859.84 = 2,715.12 : x
  2. Step 2: Convert to fraction form
    7,908.84/11,859.84 = 2,715.12/x
  3. Step 3: Cross multiply
    7,908.84x = 11,859.84 × 2,715.12
  4. Step 4: Simplify right side
    7,908.84x = 32,200,888.78
  5. Step 5: Solve for x
    x = 32,200,888.78/7,908.84
  6. Step 6: Final answer
    x = 4,071.51

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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.