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Finding the Fourth Proportional to 12,188.01, 18,284.63 and 3,868.70

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Solution

The fourth proportional to 12,188.01, 18,284.63 and 3,868.70 is: 5,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.01 : 18,284.63 = 3,868.70 : x
  2. Step 2: Convert to fraction form
    12,188.01/18,284.63 = 3,868.70/x
  3. Step 3: Cross multiply
    12,188.01x = 18,284.63 × 3,868.70
  4. Step 4: Simplify right side
    12,188.01x = 70,737,748.08
  5. Step 5: Solve for x
    x = 70,737,748.08/12,188.01
  6. Step 6: Final answer
    x = 5,803.88

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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.