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Finding the Fourth Proportional to 12,807.46, 19,211.19 and 3,447.50

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Solution

The fourth proportional to 12,807.46, 19,211.19 and 3,447.50 is: 5,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.46 : 19,211.19 = 3,447.50 : x
  2. Step 2: Convert to fraction form
    12,807.46/19,211.19 = 3,447.50/x
  3. Step 3: Cross multiply
    12,807.46x = 19,211.19 × 3,447.50
  4. Step 4: Simplify right side
    12,807.46x = 66,230,464.23
  5. Step 5: Solve for x
    x = 66,230,464.23/12,807.46
  6. Step 6: Final answer
    x = 5,171.24

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Similar ratio
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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.