Home / 3,731.86-5,149.74-2,159.65

Finding the Fourth Proportional to 3,731.86, 5,149.74 and 2,159.65

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Solution

The fourth proportional to 3,731.86, 5,149.74 and 2,159.65 is: 2,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,731.86 : 5,149.74 = 2,159.65 : x
  2. Step 2: Convert to fraction form
    3,731.86/5,149.74 = 2,159.65/x
  3. Step 3: Cross multiply
    3,731.86x = 5,149.74 × 2,159.65
  4. Step 4: Simplify right side
    3,731.86x = 11,121,635.99
  5. Step 5: Solve for x
    x = 11,121,635.99/3,731.86
  6. Step 6: Final answer
    x = 2,980.19

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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.