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Finding the Fourth Proportional to 3,609.60, 4,953.60 and 3,379.20

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Solution

The fourth proportional to 3,609.60, 4,953.60 and 3,379.20 is: 4,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.60 : 4,953.60 = 3,379.20 : x
  2. Step 2: Convert to fraction form
    3,609.60/4,953.60 = 3,379.20/x
  3. Step 3: Cross multiply
    3,609.60x = 4,953.60 × 3,379.20
  4. Step 4: Simplify right side
    3,609.60x = 16,739,205.12
  5. Step 5: Solve for x
    x = 16,739,205.12/3,609.60
  6. Step 6: Final answer
    x = 4,637.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.