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Finding the Fourth Proportional to 8,604.98, 12,912.18 and 3,340.20

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Solution

The fourth proportional to 8,604.98, 12,912.18 and 3,340.20 is: 5,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.98 : 12,912.18 = 3,340.20 : x
  2. Step 2: Convert to fraction form
    8,604.98/12,912.18 = 3,340.20/x
  3. Step 3: Cross multiply
    8,604.98x = 12,912.18 × 3,340.20
  4. Step 4: Simplify right side
    8,604.98x = 43,129,263.64
  5. Step 5: Solve for x
    x = 43,129,263.64/8,604.98
  6. Step 6: Final answer
    x = 5,012.13

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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.