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Finding the Fourth Proportional to 7,872.06, 11,808.06 and 7,390.92

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Solution

The fourth proportional to 7,872.06, 11,808.06 and 7,390.92 is: 11,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.06 : 11,808.06 = 7,390.92 : x
  2. Step 2: Convert to fraction form
    7,872.06/11,808.06 = 7,390.92/x
  3. Step 3: Cross multiply
    7,872.06x = 11,808.06 × 7,390.92
  4. Step 4: Simplify right side
    7,872.06x = 87,272,426.82
  5. Step 5: Solve for x
    x = 87,272,426.82/7,872.06
  6. Step 6: Final answer
    x = 11,086.35

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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.