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Finding the Fourth Proportional to 8,369.64, 12,555.18 and 3,440.46

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Solution

The fourth proportional to 8,369.64, 12,555.18 and 3,440.46 is: 5,160.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.64 : 12,555.18 = 3,440.46 : x
  2. Step 2: Convert to fraction form
    8,369.64/12,555.18 = 3,440.46/x
  3. Step 3: Cross multiply
    8,369.64x = 12,555.18 × 3,440.46
  4. Step 4: Simplify right side
    8,369.64x = 43,195,594.58
  5. Step 5: Solve for x
    x = 43,195,594.58/8,369.64
  6. Step 6: Final answer
    x = 5,160.99

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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.