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Finding the Fourth Proportional to 8,601.16, 12,900 and 3,054.40

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Solution

The fourth proportional to 8,601.16, 12,900 and 3,054.40 is: 4,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.16 : 12,900 = 3,054.40 : x
  2. Step 2: Convert to fraction form
    8,601.16/12,900 = 3,054.40/x
  3. Step 3: Cross multiply
    8,601.16x = 12,900 × 3,054.40
  4. Step 4: Simplify right side
    8,601.16x = 39,401,760
  5. Step 5: Solve for x
    x = 39,401,760/8,601.16
  6. Step 6: Final answer
    x = 4,580.98

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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.