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Finding the Fourth Proportional to 9,362.18, 12,900.12 and 6,372.74

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Solution

The fourth proportional to 9,362.18, 12,900.12 and 6,372.74 is: 8,780.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.18 : 12,900.12 = 6,372.74 : x
  2. Step 2: Convert to fraction form
    9,362.18/12,900.12 = 6,372.74/x
  3. Step 3: Cross multiply
    9,362.18x = 12,900.12 × 6,372.74
  4. Step 4: Simplify right side
    9,362.18x = 82,209,110.73
  5. Step 5: Solve for x
    x = 82,209,110.73/9,362.18
  6. Step 6: Final answer
    x = 8,780.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.