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Finding the Fourth Proportional to 5,445.39, 8,168.06 and 1,982.64

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Solution

The fourth proportional to 5,445.39, 8,168.06 and 1,982.64 is: 2,973.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.39 : 8,168.06 = 1,982.64 : x
  2. Step 2: Convert to fraction form
    5,445.39/8,168.06 = 1,982.64/x
  3. Step 3: Cross multiply
    5,445.39x = 8,168.06 × 1,982.64
  4. Step 4: Simplify right side
    5,445.39x = 16,194,312.57
  5. Step 5: Solve for x
    x = 16,194,312.57/5,445.39
  6. Step 6: Final answer
    x = 2,973.95

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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.