Home / 3,739.92-5,157.28-2,620.50

Finding the Fourth Proportional to 3,739.92, 5,157.28 and 2,620.50

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Solution

The fourth proportional to 3,739.92, 5,157.28 and 2,620.50 is: 3,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.92 : 5,157.28 = 2,620.50 : x
  2. Step 2: Convert to fraction form
    3,739.92/5,157.28 = 2,620.50/x
  3. Step 3: Cross multiply
    3,739.92x = 5,157.28 × 2,620.50
  4. Step 4: Simplify right side
    3,739.92x = 13,514,639.14
  5. Step 5: Solve for x
    x = 13,514,639.14/3,739.92
  6. Step 6: Final answer
    x = 3,613.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.