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Finding the Fourth Proportional to 7,178.66, 10,767.99 and 3,912.51

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Solution

The fourth proportional to 7,178.66, 10,767.99 and 3,912.51 is: 5,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.66 : 10,767.99 = 3,912.51 : x
  2. Step 2: Convert to fraction form
    7,178.66/10,767.99 = 3,912.51/x
  3. Step 3: Cross multiply
    7,178.66x = 10,767.99 × 3,912.51
  4. Step 4: Simplify right side
    7,178.66x = 42,129,868.55
  5. Step 5: Solve for x
    x = 42,129,868.55/7,178.66
  6. Step 6: Final answer
    x = 5,868.77

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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.