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Finding the Fourth Proportional to 5,612.53, 8,421.64 and 3,739.70

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Solution

The fourth proportional to 5,612.53, 8,421.64 and 3,739.70 is: 5,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.53 : 8,421.64 = 3,739.70 : x
  2. Step 2: Convert to fraction form
    5,612.53/8,421.64 = 3,739.70/x
  3. Step 3: Cross multiply
    5,612.53x = 8,421.64 × 3,739.70
  4. Step 4: Simplify right side
    5,612.53x = 31,494,383.28
  5. Step 5: Solve for x
    x = 31,494,383.28/5,612.53
  6. Step 6: Final answer
    x = 5,611.44

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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.