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Finding the Fourth Proportional to 8,640.98, 12,964.20 and 3,094.19

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Solution

The fourth proportional to 8,640.98, 12,964.20 and 3,094.19 is: 4,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.98 : 12,964.20 = 3,094.19 : x
  2. Step 2: Convert to fraction form
    8,640.98/12,964.20 = 3,094.19/x
  3. Step 3: Cross multiply
    8,640.98x = 12,964.20 × 3,094.19
  4. Step 4: Simplify right side
    8,640.98x = 40,113,698.00
  5. Step 5: Solve for x
    x = 40,113,698.00/8,640.98
  6. Step 6: Final answer
    x = 4,642.26

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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.